f1-elo

1991 F1 Season - Elo Analysis

Last updated: 2025-08-01

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Round 1 – United States Grand Prix • Round 2 – Brazilian Grand Prix • Round 3 – San Marino Grand Prix • Round 4 – Monaco Grand Prix • Round 5 – Canadian Grand Prix • Round 6 – Mexican Grand Prix • Round 7 – French Grand Prix • Round 8 – British Grand Prix • Round 9 – German Grand Prix • Round 10 – Hungarian Grand Prix • Round 11 – Belgian Grand Prix • Round 12 – Italian Grand Prix • Round 13 – Portuguese Grand Prix • Round 14 – Spanish Grand Prix • Round 15 – Japanese Grand Prix • Round 16 – Australian Grand Prix

📊 View Complete F1 1991 Season Results

Wikipedia 1991 F1 Season

Final Elo Ratings

📊 View Complete F1 1991 Season Results

Rank	Starting Elo	Driver	Constructor	Qualifying Elo	Race Elo	Final ELO
1	1888	Ayrton Senna	McLaren	2144	1799	1903 ▲ 15
2	1767	Nigel Mansell	Williams	1857	1778	1802 ▲ 35
3	1761	Alain Prost	Ferrari	1979	1688	1776 ▲ 15
4	1641	Stefano Modena	Tyrrell	1736	1717	1724 ▲ 83
5	1706	Gerhard Berger	McLaren	1984	1567	1691 ▼ 15
6	1741	Nelson Piquet	Benetton	1654	1681	1672 ▼ 69
7	1743	Thierry Boutsen	Ligier	1705	1608	1640 ▼ 103
8	1669	Riccardo Patrese	Williams	1712	1595	1634 ▼ 35
9	1458	Andrea de Cesaris	Jordan	1608	1608	1608 ▲ 150
10	1619	Stefan Johansson	Footwork	1472	1665	1607 ▼ 12
11	1500	Érik Comas	Ligier	1474	1656	1603 ▲ 103
12	1636	Pierluigi Martini	Minardi	1702	1547	1594 ▼ 42
13	1500	Michael Schumacher	Jordan	1660	1552	1585 ▲ 85
14	1623	Jean Alesi	Ferrari	1655	1549	1584 ▼ 39
15	1478	Maurício Gugelmin	Leyton House	1496	1598	1568 ▲ 90
16	1500	Mark Blundell	Brabham	1582	1550	1560 ▲ 60
17	1523	Éric Bernard	Larrousse	1507	1542	1531 ▲ 8
18	1574	Alex Caffi	Footwork	1560	1519	1531 ▼ 43
19	1490	Emanuele Pirro	Dallara	1527	1495	1505 ▲ 15
20	1467	Gianni Morbidelli	Minardi	1513	1500	1504 ▲ 37
21	1500	Mika Häkkinen	Team Lotus	1505	1503	1504 ▲ 4
22	1443	Michele Alboreto	Footwork	1496	1493	1498 ▲ 55
23	1527	Ivan Capelli	Leyton House	1523	1481	1494 ▼ 33
24	1502	Jyrki Järvilehto	Dallara	1482	1490	1487 ▼ 15
25	1526	Martin Brundle	Brabham	1540	1434	1466 ▼ 60
26	1500	Alessandro Zanardi	Jordan	1428	1476	1461 ▼ 39
27	1463	Roberto Moreno	Benetton	1500	1439	1457 ▼ 6
28	1434	Johnny Herbert	Team Lotus	1499	1438	1457 ▲ 23
29	1500	Karl Wendlinger	Leyton House	1430	1450	1443 ▼ 57
30	1424	Aguri Suzuki	Larrousse	1425	1412	1416 ▼ 8
31	1441	Julian Bailey	Team Lotus	1416	1412	1415 ▼ 26
32	1494	Bertrand Gachot	Jordan	1427	1390	1402 ▼ 92
33	1432	Satoru Nakajima	Tyrrell	1287	1380	1349 ▼ 83

Race-by-Race ELO Changes

Round 1 - United States Grand Prix

Date: 1991-03-10

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2202	+11	2213	Gerhard Berger (P7)
Alain Prost	Ferrari	2	1862	+22	1884	Jean Alesi (P6)
Riccardo Patrese	Williams	3	1722	+43	1765	Nigel Mansell (P4)
Nigel Mansell	Williams	4	1847	-43	1804	Riccardo Patrese (P3)
Nelson Piquet	Benetton	5	1844	+6	1850	Roberto Moreno (P8)
Jean Alesi	Ferrari	6	1749	-22	1727	Alain Prost (P2)
Gerhard Berger	McLaren	7	1926	-11	1915	Ayrton Senna (P1)
Roberto Moreno	Benetton	8	1454	-6	1448	Nelson Piquet (P5)
Emanuele Pirro	Dallara	9	1569	+21	1590	Jyrki Järvilehto (P10)
Jyrki Järvilehto	Dallara	10	1440	-21	1419	Emanuele Pirro (P9)
Stefano Modena	Tyrrell	11	1721	+5	1726	Satoru Nakajima (P16)
Martin Brundle	Brabham	12	1622	+21	1643	Mark Blundell (P24)
Mika Häkkinen	Team Lotus	13	N/A	N/A	N/A	N/A
Bertrand Gachot	Jordan	14	N/A	N/A	N/A	N/A
Pierluigi Martini	Minardi	15	1768	+9	1777	Gianni Morbidelli (P26)
Satoru Nakajima	Tyrrell	16	1302	-5	1297	Stefano Modena (P11)
Nicola Larini	Lambo	17	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	18	1553	+18	1571	Maurício Gugelmin (P23)
Éric Bernard	Larrousse	19	1479	+30	1509	Aguri Suzuki (P21)
Thierry Boutsen	Ligier	20	N/A	N/A	N/A	N/A
Aguri Suzuki	Larrousse	21	1453	-30	1423	Éric Bernard (P19)
Gabriele Tarquini	AGS	22	N/A	N/A	N/A	N/A
Maurício Gugelmin	Leyton House	23	1396	-18	1378	Ivan Capelli (P18)
Mark Blundell	Brabham	24	1500	-21	1479	Martin Brundle (P12)
Michele Alboreto	Footwork	25	N/A	N/A	N/A	N/A
Gianni Morbidelli	Minardi	26	1452	-9	1443	Pierluigi Martini (P15)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1753	N/A	1753	Gerhard Berger (PDNF)
Alain Prost	Ferrari	2	Finished	1716	N/A	1716	Jean Alesi (PDNF)
Nelson Piquet	Benetton	3	Finished	1697	+13	1710	Roberto Moreno (P15)
Stefano Modena	Tyrrell	4	Finished	1606	+22	1628	Satoru Nakajima (P5)
Satoru Nakajima	Tyrrell	5	+1 Lap	1491	-22	1469	Stefano Modena (P4)
Aguri Suzuki	Larrousse	6	+2 Laps	1412	N/A	1412	Éric Bernard (PDNF)
Nicola Larini	Lambo	7	+3 Laps	N/A	N/A	N/A	N/A
Gabriele Tarquini	AGS	8	+4 Laps	N/A	N/A	N/A	N/A
Pierluigi Martini	Minardi	9	Engine	1579	N/A	1579	Gianni Morbidelli (PDNF)
Bertrand Gachot	Jordan	10	Engine	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	11	+8 Laps	1484	N/A	1484	Mark Blundell (P22)
Jean Alesi	Ferrari	12	Gearbox	1565	N/A	1565	Alain Prost (P2)
Mika Häkkinen	Team Lotus	13	Engine	N/A	N/A	N/A	N/A
Riccardo Patrese	Williams	14	Gearbox	1644	N/A	1644	Nigel Mansell (PDNF)
Roberto Moreno	Benetton	15	Collision	1467	-13	1454	Nelson Piquet (P3)
Michele Alboreto	Footwork	16	Engine	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	17	Gearbox	1516	N/A	1516	Maurício Gugelmin (PDNF)
Thierry Boutsen	Ligier	18	Engine	N/A	N/A	N/A	N/A
Gerhard Berger	McLaren	19	Fuel pump	1613	N/A	1613	Ayrton Senna (P1)
Nigel Mansell	Williams	20	Gearbox	1729	N/A	1729	Riccardo Patrese (PDNF)
Maurício Gugelmin	Leyton House	21	Gearbox	1513	N/A	1513	Ivan Capelli (PDNF)
Mark Blundell	Brabham	22	Spun off	1500	N/A	1500	Martin Brundle (PDNF)
Emanuele Pirro	Dallara	23	Gearbox	1456	N/A	1456	Jyrki Järvilehto (PDNF)
Gianni Morbidelli	Minardi	24	Gearbox	1473	N/A	1473	Pierluigi Martini (PDNF)
Jyrki Järvilehto	Dallara	25	Gearbox	1529	N/A	1529	Emanuele Pirro (PDNF)
Éric Bernard	Larrousse	26	Engine	1542	N/A	1542	Aguri Suzuki (P6)

---

Round 2 - Brazilian Grand Prix

Date: 1991-03-24

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2213	+10	2223	Gerhard Berger (P4)
Riccardo Patrese	Williams	2	1765	+36	1801	Nigel Mansell (P3)
Nigel Mansell	Williams	3	1804	-36	1768	Riccardo Patrese (P2)
Gerhard Berger	McLaren	4	1915	-10	1905	Ayrton Senna (P1)
Jean Alesi	Ferrari	5	1727	+46	1773	Alain Prost (P6)
Alain Prost	Ferrari	6	1884	-46	1838	Jean Alesi (P5)
Nelson Piquet	Benetton	7	1850	+6	1856	Roberto Moreno (P14)
Maurício Gugelmin	Leyton House	8	1378	+48	1426	Ivan Capelli (P15)
Stefano Modena	Tyrrell	9	1726	+5	1731	Satoru Nakajima (P16)
Bertrand Gachot	Jordan	10	1524	+27	1551	Andrea de Cesaris (P13)
Éric Bernard	Larrousse	11	1509	+24	1533	Aguri Suzuki (P17)
Emanuele Pirro	Dallara	12	1590	+17	1607	Jyrki Järvilehto (P19)
Andrea de Cesaris	Jordan	13	1473	-27	1446	Bertrand Gachot (P10)
Roberto Moreno	Benetton	14	1448	-6	1442	Nelson Piquet (P7)
Ivan Capelli	Leyton House	15	1571	-48	1523	Maurício Gugelmin (P8)
Satoru Nakajima	Tyrrell	16	1297	-5	1292	Stefano Modena (P9)
Aguri Suzuki	Larrousse	17	1423	-24	1399	Éric Bernard (P11)
Thierry Boutsen	Ligier	18	1679	+17	1696	Érik Comas (P23)
Jyrki Järvilehto	Dallara	19	1419	-17	1402	Emanuele Pirro (P12)
Pierluigi Martini	Minardi	20	1777	+8	1785	Gianni Morbidelli (P21)
Gianni Morbidelli	Minardi	21	1443	-8	1435	Pierluigi Martini (P20)
Mika Häkkinen	Team Lotus	22	N/A	N/A	N/A	N/A
Érik Comas	Ligier	23	1500	-17	1483	Thierry Boutsen (P18)
Gabriele Tarquini	AGS	24	N/A	N/A	N/A	N/A
Mark Blundell	Brabham	25	1479	+46	1525	Martin Brundle (P26)
Martin Brundle	Brabham	26	1643	-46	1597	Mark Blundell (P25)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1753	+20	1773	Gerhard Berger (P3)
Riccardo Patrese	Williams	2	Finished	1644	N/A	1644	Nigel Mansell (PDNF)
Gerhard Berger	McLaren	3	Finished	1613	-20	1593	Ayrton Senna (P1)
Alain Prost	Ferrari	4	Finished	1716	+19	1735	Jean Alesi (P6)
Nelson Piquet	Benetton	5	Finished	1710	+12	1722	Roberto Moreno (P7)
Jean Alesi	Ferrari	6	Finished	1565	-19	1546	Alain Prost (P4)
Roberto Moreno	Benetton	7	+1 Lap	1454	-12	1442	Nelson Piquet (P5)
Gianni Morbidelli	Minardi	8	+2 Laps	1473	+41	1514	Pierluigi Martini (P16)
Mika Häkkinen	Team Lotus	9	+3 Laps	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	10	+3 Laps	1764	N/A	1764	Érik Comas (PDNF)
Emanuele Pirro	Dallara	11	+3 Laps	1456	N/A	1456	Jyrki Järvilehto (PDNF)
Martin Brundle	Brabham	12	+4 Laps	1484	N/A	1484	Mark Blundell (PDNF)
Bertrand Gachot	Jordan	13	Fuel system	1481	N/A	1481	Andrea de Cesaris (PDNF)
Nigel Mansell	Williams	14	Gearbox	1729	N/A	1729	Riccardo Patrese (P2)
Érik Comas	Ligier	15	Engine	1500	N/A	1500	Thierry Boutsen (P10)
Pierluigi Martini	Minardi	16	Spun off	1579	-41	1538	Gianni Morbidelli (P8)
Mark Blundell	Brabham	17	Engine	1500	N/A	1500	Martin Brundle (P12)
Éric Bernard	Larrousse	18	Radiator	1542	N/A	1542	Aguri Suzuki (PDNF)
Jyrki Järvilehto	Dallara	19	Electrical	1529	N/A	1529	Emanuele Pirro (P11)
Andrea de Cesaris	Jordan	20	Engine	1451	N/A	1451	Bertrand Gachot (PDNF)
Stefano Modena	Tyrrell	21	Gearbox	1628	N/A	1628	Satoru Nakajima (P23)
Ivan Capelli	Leyton House	22	Transmission	1516	N/A	1516	Maurício Gugelmin (PDNF)
Satoru Nakajima	Tyrrell	23	Spun off	1469	N/A	1469	Stefano Modena (PDNF)
Maurício Gugelmin	Leyton House	24	Physical	1513	N/A	1513	Ivan Capelli (PDNF)
Gabriele Tarquini	AGS	25	Suspension	N/A	N/A	N/A	N/A
Aguri Suzuki	Larrousse	26	Fuel pump	1412	N/A	1412	Éric Bernard (PDNF)

---

Round 3 - San Marino Grand Prix

Date: 1991-04-28

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2223	+9	2231	Gerhard Berger (P5)
Riccardo Patrese	Williams	2	1801	+29	1830	Nigel Mansell (P4)
Alain Prost	Ferrari	3	1838	+26	1864	Jean Alesi (P7)
Nigel Mansell	Williams	4	1768	-29	1739	Riccardo Patrese (P2)
Gerhard Berger	McLaren	5	1905	-9	1897	Ayrton Senna (P1)
Stefano Modena	Tyrrell	6	1731	+5	1736	Satoru Nakajima (P10)
Jean Alesi	Ferrari	7	1773	-26	1747	Alain Prost (P3)
Gianni Morbidelli	Minardi	8	1435	+56	1491	Pierluigi Martini (P9)
Pierluigi Martini	Minardi	9	1785	-56	1729	Gianni Morbidelli (P8)
Satoru Nakajima	Tyrrell	10	1292	-5	1287	Stefano Modena (P6)
Andrea de Cesaris	Jordan	11	1446	+41	1487	Bertrand Gachot (P13)
Roberto Moreno	Benetton	13	1442	+59	1501	Nelson Piquet (P14)
Bertrand Gachot	Jordan	13	1551	-41	1510	Andrea de Cesaris (P11)
Nelson Piquet	Benetton	14	1856	-59	1797	Roberto Moreno (P13)
Maurício Gugelmin	Leyton House	15	1426	+41	1467	Ivan Capelli (P22)
Jyrki Järvilehto	Dallara	16	N/A	N/A	N/A	N/A
Éric Bernard	Lola	17	1533	+20	1553	Aguri Suzuki (P20)
Martin Brundle	Brabham	18	1597	+25	1623	Mark Blundell (P23)
Érik Comas	Ligier	19	1483	+49	1533	Thierry Boutsen (P24)
Aguri Suzuki	Lola	20	1399	-20	1379	Éric Bernard (P17)
Eric van de Poele	Lambo	21	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	22	1523	-41	1482	Maurício Gugelmin (P15)
Mark Blundell	Brabham	23	1525	-25	1499	Martin Brundle (P18)
Thierry Boutsen	Ligier	24	1696	-49	1646	Érik Comas (P19)
Mika Häkkinen	Team Lotus	25	1500	+27	1527	Julian Bailey (P26)
Julian Bailey	Team Lotus	26	1443	-27	1416	Mika Häkkinen (P25)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1773	+17	1790	Gerhard Berger (P2)
Gerhard Berger	McLaren	2	Finished	1593	-17	1576	Ayrton Senna (P1)
Jyrki Järvilehto	Dallara	3	+1 Lap	N/A	N/A	N/A	N/A
Pierluigi Martini	Minardi	4	+2 Laps	1538	N/A	1538	Gianni Morbidelli (PDNF)
Mika Häkkinen	Team Lotus	5	+3 Laps	1500	+26	1526	Julian Bailey (P6)
Julian Bailey	Team Lotus	6	+3 Laps	1438	-26	1412	Mika Häkkinen (P5)
Thierry Boutsen	Ligier	7	+3 Laps	1764	+11	1775	Érik Comas (P10)
Mark Blundell	Brabham	8	+3 Laps	1500	+31	1531	Martin Brundle (P11)
Eric van de Poele	Lambo	9	Out of fuel	N/A	N/A	N/A	N/A
Érik Comas	Ligier	10	+4 Laps	1500	-11	1489	Thierry Boutsen (P7)
Martin Brundle	Brabham	11	+4 Laps	1484	-31	1453	Mark Blundell (P8)
Maurício Gugelmin	Leyton House	12	Engine	1513	N/A	1513	Ivan Capelli (P17)
Roberto Moreno	Benetton	13	Engine	1442	N/A	1442	Nelson Piquet (P24)
Stefano Modena	Tyrrell	14	Transmission	1628	N/A	1628	Satoru Nakajima (PDNF)
Andrea de Cesaris	Jordan	15	Gearbox	1451	N/A	1451	Bertrand Gachot (PDNF)
Bertrand Gachot	Jordan	16	Suspension	1481	N/A	1481	Andrea de Cesaris (PDNF)
Ivan Capelli	Leyton House	17	Spun off	1516	N/A	1516	Maurício Gugelmin (PDNF)
Éric Bernard	Lola	18	Engine	1542	N/A	1542	Aguri Suzuki (P23)
Riccardo Patrese	Williams	19	Electrical	1644	N/A	1644	Nigel Mansell (P25)
Satoru Nakajima	Tyrrell	20	Transmission	1469	N/A	1469	Stefano Modena (PDNF)
Gianni Morbidelli	Minardi	21	Gearbox	1514	N/A	1514	Pierluigi Martini (P4)
Jean Alesi	Ferrari	22	Spun off	1546	+48	1594	Alain Prost (P26)
Aguri Suzuki	Lola	23	Spun off	1412	N/A	1412	Éric Bernard (PDNF)
Nelson Piquet	Benetton	24	Spun off	1722	N/A	1722	Roberto Moreno (PDNF)
Nigel Mansell	Williams	25	Collision	1729	N/A	1729	Riccardo Patrese (PDNF)
Alain Prost	Ferrari	26	Spun off	1735	-48	1687	Jean Alesi (P22)

---

Round 4 - Monaco Grand Prix

Date: 1991-05-12

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2231	+8	2240	Gerhard Berger (P6)
Stefano Modena	Tyrrell	2	1736	+4	1740	Satoru Nakajima (P11)
Riccardo Patrese	Williams	3	1830	+24	1854	Nigel Mansell (P5)
Nelson Piquet	Benetton	4	1797	+10	1807	Roberto Moreno (P8)
Nigel Mansell	Williams	5	1739	-24	1715	Riccardo Patrese (P3)
Gerhard Berger	McLaren	6	1897	-8	1888	Ayrton Senna (P1)
Alain Prost	Ferrari	7	1864	+22	1886	Jean Alesi (P9)
Roberto Moreno	Benetton	8	1501	-10	1491	Nelson Piquet (P4)
Jean Alesi	Ferrari	9	1747	-22	1725	Alain Prost (P7)
Andrea de Cesaris	Jordan	10	1487	+34	1521	Bertrand Gachot (P23)
Satoru Nakajima	Tyrrell	11	1287	-4	1283	Stefano Modena (P2)
Emanuele Pirro	Dallara	12	1607	+15	1622	Jyrki Järvilehto (P21)
Éric Bernard	Lola	13	1553	+17	1570	Aguri Suzuki (P20)
Pierluigi Martini	Minardi	14	1729	+13	1742	Gianni Morbidelli (P17)
Maurício Gugelmin	Leyton House	15	1467	+33	1500	Ivan Capelli (P18)
Thierry Boutsen	Ligier	16	1646	+22	1668	Érik Comas (P26)
Gianni Morbidelli	Minardi	17	1491	-13	1478	Pierluigi Martini (P14)
Ivan Capelli	Leyton House	18	1482	-33	1449	Maurício Gugelmin (P15)
Mark Blundell	Brabham	19	N/A	N/A	N/A	N/A
Aguri Suzuki	Lola	20	1379	-17	1362	Éric Bernard (P13)
Jyrki Järvilehto	Dallara	21	1402	-15	1387	Emanuele Pirro (P12)
Michele Alboreto	Footwork	22	N/A	N/A	N/A	N/A
Bertrand Gachot	Jordan	23	1510	-34	1476	Andrea de Cesaris (P10)
Gabriele Tarquini	AGS	24	N/A	N/A	N/A	N/A
Mika Häkkinen	Team Lotus	25	N/A	N/A	N/A	N/A
Érik Comas	Ligier	26	1533	-22	1511	Thierry Boutsen (P16)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1790	+15	1804	Gerhard Berger (P25)
Nigel Mansell	Williams	2	Finished	1729	+24	1753	Riccardo Patrese (P17)
Jean Alesi	Ferrari	3	Finished	1594	+40	1634	Alain Prost (P5)
Roberto Moreno	Benetton	4	+1 Lap	1442	N/A	1442	Nelson Piquet (PDNF)
Alain Prost	Ferrari	5	+1 Lap	1687	-40	1647	Jean Alesi (P3)
Emanuele Pirro	Dallara	6	+1 Lap	1456	+39	1495	Jyrki Järvilehto (P11)
Thierry Boutsen	Ligier	7	+2 Laps	1775	+10	1786	Érik Comas (P10)
Bertrand Gachot	Jordan	8	+2 Laps	1481	N/A	1481	Andrea de Cesaris (PDNF)
Éric Bernard	Lola	9	+2 Laps	1542	N/A	1542	Aguri Suzuki (PDNF)
Érik Comas	Ligier	10	+2 Laps	1489	-10	1478	Thierry Boutsen (P7)
Jyrki Järvilehto	Dallara	11	+3 Laps	1529	-39	1490	Emanuele Pirro (P6)
Pierluigi Martini	Minardi	12	+6 Laps	1538	N/A	1538	Gianni Morbidelli (PDNF)
Mika Häkkinen	Team Lotus	13	Oil leak	N/A	N/A	N/A	N/A
Gianni Morbidelli	Minardi	14	Gearbox	1514	N/A	1514	Pierluigi Martini (P12)
Maurício Gugelmin	Leyton House	15	Throttle	1513	N/A	1513	Ivan Capelli (PDNF)
Stefano Modena	Tyrrell	16	Engine	1628	N/A	1628	Satoru Nakajima (P20)
Riccardo Patrese	Williams	17	Spun off	1644	-24	1620	Nigel Mansell (P2)
Mark Blundell	Brabham	18	Spun off	N/A	N/A	N/A	N/A
Michele Alboreto	Footwork	19	Engine	N/A	N/A	N/A	N/A
Satoru Nakajima	Tyrrell	20	Spun off	1469	N/A	1469	Stefano Modena (PDNF)
Aguri Suzuki	Lola	21	Engine	1412	N/A	1412	Éric Bernard (P9)
Andrea de Cesaris	Jordan	22	Throttle	1451	N/A	1451	Bertrand Gachot (P8)
Ivan Capelli	Leyton House	23	Brakes	1516	N/A	1516	Maurício Gugelmin (PDNF)
Gabriele Tarquini	AGS	24	Gearbox	N/A	N/A	N/A	N/A
Gerhard Berger	McLaren	25	Spun off	1576	-15	1562	Ayrton Senna (P1)
Nelson Piquet	Benetton	26	Suspension	1722	N/A	1722	Roberto Moreno (P4)

---

Round 5 - Canadian Grand Prix

Date: 1991-06-02

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	1854	+20	1873	Nigel Mansell (P2)
Nigel Mansell	Williams	2	1715	-20	1696	Riccardo Patrese (P1)
Ayrton Senna	McLaren	3	2240	+7	2247	Gerhard Berger (P6)
Alain Prost	Ferrari	4	1886	+18	1904	Jean Alesi (P7)
Roberto Moreno	Benetton	5	1491	+55	1546	Nelson Piquet (P8)
Gerhard Berger	McLaren	6	1888	-7	1881	Ayrton Senna (P3)
Jean Alesi	Ferrari	7	1725	-18	1707	Alain Prost (P4)
Nelson Piquet	Benetton	8	1807	-55	1752	Roberto Moreno (P5)
Stefano Modena	Tyrrell	9	1740	+4	1745	Satoru Nakajima (P12)
Emanuele Pirro	Dallara	10	1622	+13	1635	Jyrki Järvilehto (P17)
Andrea de Cesaris	Jordan	11	1521	+28	1549	Bertrand Gachot (P14)
Satoru Nakajima	Tyrrell	12	1283	-4	1278	Stefano Modena (P9)
Ivan Capelli	Leyton House	13	1449	+37	1486	Maurício Gugelmin (P23)
Bertrand Gachot	Jordan	14	1476	-28	1448	Andrea de Cesaris (P11)
Gianni Morbidelli	Minardi	15	1478	+52	1531	Pierluigi Martini (P18)
Thierry Boutsen	Ligier	16	1668	+18	1687	Érik Comas (P26)
Jyrki Järvilehto	Dallara	17	1387	-13	1374	Emanuele Pirro (P10)
Pierluigi Martini	Minardi	18	1742	-52	1689	Gianni Morbidelli (P15)
Éric Bernard	Lola	19	1570	+15	1585	Aguri Suzuki (P22)
Martin Brundle	Brabham	20	N/A	N/A	N/A	N/A
Michele Alboreto	Footwork	21	1409	+41	1450	Stefan Johansson (P25)
Aguri Suzuki	Lola	22	1362	-15	1347	Éric Bernard (P19)
Maurício Gugelmin	Leyton House	23	1500	-37	1463	Ivan Capelli (P13)
Mika Häkkinen	Team Lotus	24	N/A	N/A	N/A	N/A
Stefan Johansson	Footwork	25	1513	-41	1472	Michele Alboreto (P21)
Érik Comas	Ligier	26	1511	-18	1492	Thierry Boutsen (P16)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nelson Piquet	Benetton	1	Finished	1722	N/A	1722	Roberto Moreno (PDNF)
Stefano Modena	Tyrrell	2	Finished	1628	+18	1646	Satoru Nakajima (P10)
Riccardo Patrese	Williams	3	Finished	1620	N/A	1620	Nigel Mansell (PDNF)
Andrea de Cesaris	Jordan	4	Finished	1451	+35	1486	Bertrand Gachot (P5)
Bertrand Gachot	Jordan	5	Finished	1481	-35	1446	Andrea de Cesaris (P4)
Nigel Mansell	Williams	6	Electrical	1753	N/A	1753	Riccardo Patrese (P3)
Pierluigi Martini	Minardi	7	+1 Lap	1538	+30	1567	Gianni Morbidelli (P22)
Érik Comas	Ligier	8	+1 Lap	1478	N/A	1478	Thierry Boutsen (PDNF)
Emanuele Pirro	Dallara	9	+1 Lap	1495	N/A	1495	Jyrki Järvilehto (PDNF)
Satoru Nakajima	Tyrrell	10	+2 Laps	1469	-18	1451	Stefano Modena (P2)
Maurício Gugelmin	Leyton House	11	Engine	1513	N/A	1513	Ivan Capelli (PDNF)
Jyrki Järvilehto	Dallara	12	Engine	1490	N/A	1490	Emanuele Pirro (P9)
Stefan Johansson	Footwork	13	Throttle	1665	N/A	1665	Michele Alboreto (PDNF)
Ivan Capelli	Leyton House	14	Engine	1516	N/A	1516	Maurício Gugelmin (PDNF)
Jean Alesi	Ferrari	15	Engine	1634	N/A	1634	Alain Prost (PDNF)
Éric Bernard	Lola	16	Gearbox	1542	N/A	1542	Aguri Suzuki (PDNF)
Alain Prost	Ferrari	17	Gearbox	1647	N/A	1647	Jean Alesi (PDNF)
Thierry Boutsen	Ligier	18	Engine	1786	N/A	1786	Érik Comas (P8)
Ayrton Senna	McLaren	19	Alternator	1804	N/A	1804	Gerhard Berger (PDNF)
Mika Häkkinen	Team Lotus	20	Spun off	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	21	Engine	N/A	N/A	N/A	N/A
Gianni Morbidelli	Minardi	22	Spun off	1514	-30	1485	Pierluigi Martini (P7)
Roberto Moreno	Benetton	23	Suspension	1442	N/A	1442	Nelson Piquet (P1)
Gerhard Berger	McLaren	24	Injection	1562	N/A	1562	Ayrton Senna (PDNF)
Aguri Suzuki	Lola	25	Fuel leak	1412	N/A	1412	Éric Bernard (PDNF)
Michele Alboreto	Footwork	26	Throttle	1451	N/A	1451	Stefan Johansson (PDNF)

---

Round 6 - Mexican Grand Prix

Date: 1991-06-16

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	1873	+17	1890	Nigel Mansell (P2)
Nigel Mansell	Williams	2	1696	-17	1679	Riccardo Patrese (P1)
Ayrton Senna	McLaren	3	2247	+7	2254	Gerhard Berger (P5)
Jean Alesi	Ferrari	4	1707	+48	1755	Alain Prost (P7)
Gerhard Berger	McLaren	5	1881	-7	1874	Ayrton Senna (P3)
Nelson Piquet	Benetton	6	1752	+15	1767	Roberto Moreno (P9)
Alain Prost	Ferrari	7	1904	-48	1856	Jean Alesi (P4)
Stefano Modena	Tyrrell	8	1745	+4	1749	Satoru Nakajima (P13)
Roberto Moreno	Benetton	9	1546	-15	1531	Nelson Piquet (P6)
Thierry Boutsen	Ligier	10	N/A	N/A	N/A	N/A
Andrea de Cesaris	Jordan	11	1549	+23	1572	Bertrand Gachot (P20)
Mark Blundell	Brabham	12	1499	+43	1542	Martin Brundle (P17)
Satoru Nakajima	Tyrrell	13	1278	-4	1274	Stefano Modena (P8)
Gianni Morbidelli	Minardi	14	1531	+46	1576	Pierluigi Martini (P15)
Pierluigi Martini	Minardi	15	1689	-46	1644	Gianni Morbidelli (P14)
Jyrki Järvilehto	Dallara	16	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	17	1623	-43	1580	Mark Blundell (P12)
Maurício Gugelmin	Leyton House	18	1463	+34	1497	Ivan Capelli (P22)
Aguri Suzuki	Lola	19	1347	+51	1398	Éric Bernard (P23)
Bertrand Gachot	Jordan	20	1448	-23	1425	Andrea de Cesaris (P11)
Olivier Grouillard	Fondmetal	21	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	22	1486	-34	1452	Maurício Gugelmin (P18)
Éric Bernard	Lola	23	1585	-51	1534	Aguri Suzuki (P19)
Mika Häkkinen	Team Lotus	24	1527	+27	1554	Johnny Herbert (P25)
Johnny Herbert	Team Lotus	25	1477	-27	1450	Mika Häkkinen (P24)
Michele Alboreto	Footwork	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	Finished	1620	+44	1663	Nigel Mansell (P2)
Nigel Mansell	Williams	2	Finished	1753	-44	1710	Riccardo Patrese (P1)
Ayrton Senna	McLaren	3	Finished	1804	N/A	1804	Gerhard Berger (PDNF)
Andrea de Cesaris	Jordan	4	+1 Lap	1486	+28	1514	Bertrand Gachot (P14)
Roberto Moreno	Benetton	5	+1 Lap	1442	N/A	1442	Nelson Piquet (PDNF)
Éric Bernard	Lola	6	+1 Lap	1542	N/A	1542	Aguri Suzuki (PDNF)
Gianni Morbidelli	Minardi	7	+1 Lap	1485	+39	1524	Pierluigi Martini (P26)
Thierry Boutsen	Ligier	8	+2 Laps	N/A	N/A	N/A	N/A
Mika Häkkinen	Team Lotus	9	+2 Laps	1526	+22	1548	Johnny Herbert (P10)
Johnny Herbert	Team Lotus	10	+2 Laps	1415	-22	1393	Mika Häkkinen (P9)
Stefano Modena	Tyrrell	11	+2 Laps	1646	+16	1662	Satoru Nakajima (P12)
Satoru Nakajima	Tyrrell	12	+3 Laps	1451	-16	1435	Stefano Modena (P11)
Mark Blundell	Brabham	13	Engine	1531	N/A	1531	Martin Brundle (PDNF)
Bertrand Gachot	Jordan	14	Spun off	1446	-28	1418	Andrea de Cesaris (P4)
Aguri Suzuki	Lola	15	Gearbox	1412	N/A	1412	Éric Bernard (P6)
Nelson Piquet	Benetton	16	Wheel bearing	1722	N/A	1722	Roberto Moreno (P5)
Jean Alesi	Ferrari	17	Clutch	1634	N/A	1634	Alain Prost (PDNF)
Jyrki Järvilehto	Dallara	18	Engine	N/A	N/A	N/A	N/A
Michele Alboreto	Footwork	19	Engine	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	20	Wheel	1453	N/A	1453	Mark Blundell (PDNF)
Ivan Capelli	Leyton House	21	Engine	1516	N/A	1516	Maurício Gugelmin (PDNF)
Alain Prost	Ferrari	22	Alternator	1647	N/A	1647	Jean Alesi (PDNF)
Maurício Gugelmin	Leyton House	23	Engine	1513	N/A	1513	Ivan Capelli (PDNF)
Olivier Grouillard	Fondmetal	24	Engine	N/A	N/A	N/A	N/A
Gerhard Berger	McLaren	25	Engine	1562	N/A	1562	Ayrton Senna (P3)
Pierluigi Martini	Minardi	26	Spun off	1567	-39	1528	Gianni Morbidelli (P7)

---

Round 7 - French Grand Prix

Date: 1991-07-07

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	1890	+15	1905	Nigel Mansell (P4)
Alain Prost	Ferrari	2	1856	+23	1879	Jean Alesi (P6)
Ayrton Senna	McLaren	3	2254	+6	2260	Gerhard Berger (P5)
Nigel Mansell	Williams	4	1679	-15	1664	Riccardo Patrese (P1)
Gerhard Berger	McLaren	5	1874	-6	1868	Ayrton Senna (P3)
Jean Alesi	Ferrari	6	1755	-23	1732	Alain Prost (P2)
Nelson Piquet	Benetton	7	1767	+13	1780	Roberto Moreno (P8)
Roberto Moreno	Benetton	8	1531	-13	1518	Nelson Piquet (P7)
Maurício Gugelmin	Leyton House	9	1497	+28	1525	Ivan Capelli (P15)
Gianni Morbidelli	Minardi	10	1576	+38	1615	Pierluigi Martini (P12)
Stefano Modena	Tyrrell	11	1749	+4	1753	Satoru Nakajima (P18)
Pierluigi Martini	Minardi	12	1644	-38	1605	Gianni Morbidelli (P10)
Andrea de Cesaris	Jordan	13	1572	+19	1591	Bertrand Gachot (P19)
Érik Comas	Ligier	14	1492	+48	1541	Thierry Boutsen (P16)
Ivan Capelli	Leyton House	15	1452	-28	1424	Maurício Gugelmin (P9)
Thierry Boutsen	Ligier	16	1687	-48	1638	Érik Comas (P14)
Mark Blundell	Brabham	17	1542	+35	1578	Martin Brundle (P24)
Satoru Nakajima	Tyrrell	18	1274	-4	1270	Stefano Modena (P11)
Bertrand Gachot	Jordan	19	1425	-19	1406	Andrea de Cesaris (P13)
Johnny Herbert	Team Lotus	20	N/A	N/A	N/A	N/A
Olivier Grouillard	Fondmetal	21	N/A	N/A	N/A	N/A
Aguri Suzuki	Lola	22	1398	+44	1442	Éric Bernard (P23)
Éric Bernard	Lola	23	1534	-44	1490	Aguri Suzuki (P22)
Martin Brundle	Brabham	24	1580	-35	1544	Mark Blundell (P17)
Michele Alboreto	Footwork	25	N/A	N/A	N/A	N/A
Jyrki Järvilehto	Dallara	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	Finished	1710	+28	1737	Riccardo Patrese (P5)
Alain Prost	Ferrari	2	Finished	1647	+31	1678	Jean Alesi (P4)
Ayrton Senna	McLaren	3	Finished	1804	N/A	1804	Gerhard Berger (PDNF)
Jean Alesi	Ferrari	4	Finished	1634	-31	1603	Alain Prost (P2)
Riccardo Patrese	Williams	5	+1 Lap	1663	-28	1636	Nigel Mansell (P1)
Andrea de Cesaris	Jordan	6	+1 Lap	1514	+23	1537	Bertrand Gachot (P26)
Maurício Gugelmin	Leyton House	7	+2 Laps	1513	+32	1545	Ivan Capelli (P24)
Nelson Piquet	Benetton	8	+2 Laps	1722	N/A	1722	Roberto Moreno (PDNF)
Pierluigi Martini	Minardi	9	+2 Laps	1528	+32	1560	Gianni Morbidelli (P23)
Johnny Herbert	Team Lotus	10	+2 Laps	N/A	N/A	N/A	N/A
Érik Comas	Ligier	11	+2 Laps	1478	+55	1533	Thierry Boutsen (P12)
Thierry Boutsen	Ligier	12	+3 Laps	1786	-55	1731	Érik Comas (P11)
Roberto Moreno	Benetton	13	Physical	1442	N/A	1442	Nelson Piquet (P8)
Stefano Modena	Tyrrell	14	Gearbox	1662	N/A	1662	Satoru Nakajima (P22)
Olivier Grouillard	Fondmetal	15	Oil leak	N/A	N/A	N/A	N/A
Éric Bernard	Lola	16	Transmission	1542	N/A	1542	Aguri Suzuki (PDNF)
Jyrki Järvilehto	Dallara	17	Tyre	N/A	N/A	N/A	N/A
Mark Blundell	Brabham	18	Spun off	1531	N/A	1531	Martin Brundle (PDNF)
Aguri Suzuki	Lola	19	Transmission	1412	N/A	1412	Éric Bernard (PDNF)
Michele Alboreto	Footwork	20	Gearbox	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	21	Gearbox	1453	N/A	1453	Mark Blundell (P18)
Satoru Nakajima	Tyrrell	22	Spun off	1435	N/A	1435	Stefano Modena (PDNF)
Gianni Morbidelli	Minardi	23	Collision	1524	-32	1492	Pierluigi Martini (P9)
Ivan Capelli	Leyton House	24	Spun off	1516	-32	1484	Maurício Gugelmin (P7)
Gerhard Berger	McLaren	25	Engine	1562	N/A	1562	Ayrton Senna (P3)
Bertrand Gachot	Jordan	26	Spun off	1418	-23	1395	Andrea de Cesaris (P6)

---

Round 8 - British Grand Prix

Date: 1991-07-14

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	1664	+51	1715	Riccardo Patrese (P3)
Ayrton Senna	McLaren	2	2260	+6	2267	Gerhard Berger (P4)
Riccardo Patrese	Williams	3	1905	-51	1854	Nigel Mansell (P1)
Gerhard Berger	McLaren	4	1868	-6	1861	Ayrton Senna (P2)
Alain Prost	Ferrari	5	1879	+19	1898	Jean Alesi (P6)
Jean Alesi	Ferrari	6	1732	-19	1713	Alain Prost (P5)
Roberto Moreno	Benetton	7	1518	+52	1570	Nelson Piquet (P8)
Nelson Piquet	Benetton	8	1780	-52	1728	Roberto Moreno (P7)
Maurício Gugelmin	Leyton House	9	1525	+23	1548	Ivan Capelli (P16)
Stefano Modena	Tyrrell	10	1753	+4	1756	Satoru Nakajima (P15)
Jyrki Järvilehto	Dallara	11	1374	+52	1426	Emanuele Pirro (P18)
Mark Blundell	Brabham	12	1578	+29	1607	Martin Brundle (P14)
Andrea de Cesaris	Jordan	13	1591	+16	1608	Bertrand Gachot (P17)
Martin Brundle	Brabham	14	1544	-29	1515	Mark Blundell (P12)
Satoru Nakajima	Tyrrell	15	1270	-4	1267	Stefano Modena (P10)
Ivan Capelli	Leyton House	16	1424	-23	1401	Maurício Gugelmin (P9)
Bertrand Gachot	Jordan	17	1406	-16	1389	Andrea de Cesaris (P13)
Emanuele Pirro	Dallara	18	1635	-52	1583	Jyrki Järvilehto (P11)
Thierry Boutsen	Ligier	19	N/A	N/A	N/A	N/A
Gianni Morbidelli	Minardi	20	1615	+31	1646	Pierluigi Martini (P23)
Éric Bernard	Lola	21	1490	+28	1518	Aguri Suzuki (P22)
Aguri Suzuki	Lola	22	1442	-28	1414	Éric Bernard (P21)
Pierluigi Martini	Minardi	23	1605	-31	1574	Gianni Morbidelli (P20)
Johnny Herbert	Team Lotus	24	1450	+41	1491	Mika Häkkinen (P25)
Mika Häkkinen	Team Lotus	25	1554	-41	1513	Johnny Herbert (P24)
Michele Alboreto	Footwork	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	Finished	1737	+23	1760	Riccardo Patrese (P26)
Gerhard Berger	McLaren	2	Finished	1562	N/A	1562	Ayrton Senna (PDNF)
Alain Prost	Ferrari	3	Finished	1678	+25	1703	Jean Alesi (P17)
Ayrton Senna	McLaren	4	Out of fuel	1804	N/A	1804	Gerhard Berger (P2)
Nelson Piquet	Benetton	5	+1 Lap	1722	N/A	1722	Roberto Moreno (PDNF)
Bertrand Gachot	Jordan	6	+1 Lap	1395	+44	1439	Andrea de Cesaris (P16)
Stefano Modena	Tyrrell	7	+1 Lap	1662	+14	1675	Satoru Nakajima (P8)
Satoru Nakajima	Tyrrell	8	+1 Lap	1435	-14	1422	Stefano Modena (P7)
Pierluigi Martini	Minardi	9	+1 Lap	1560	+26	1585	Gianni Morbidelli (P11)
Emanuele Pirro	Dallara	10	+2 Laps	1495	+32	1526	Jyrki Järvilehto (P13)
Gianni Morbidelli	Minardi	11	+2 Laps	1492	-26	1467	Pierluigi Martini (P9)
Mika Häkkinen	Team Lotus	12	+2 Laps	1548	N/A	1548	Johnny Herbert (PDNF)
Jyrki Järvilehto	Dallara	13	+3 Laps	1490	-32	1459	Emanuele Pirro (P10)
Johnny Herbert	Team Lotus	14	Oil pressure	1393	N/A	1393	Mika Häkkinen (P12)
Mark Blundell	Brabham	15	Engine	1531	N/A	1531	Martin Brundle (PDNF)
Andrea de Cesaris	Jordan	16	Spun off	1537	-44	1493	Bertrand Gachot (P6)
Jean Alesi	Ferrari	17	Collision	1603	-25	1578	Alain Prost (P3)
Aguri Suzuki	Lola	18	Collision	1412	N/A	1412	Éric Bernard (PDNF)
Thierry Boutsen	Ligier	19	Engine	N/A	N/A	N/A	N/A
Martin Brundle	Brabham	20	Throttle	1453	N/A	1453	Mark Blundell (PDNF)
Michele Alboreto	Footwork	21	Transmission	N/A	N/A	N/A	N/A
Maurício Gugelmin	Leyton House	22	Chassis	1545	N/A	1545	Ivan Capelli (P25)
Roberto Moreno	Benetton	23	Gearbox	1442	N/A	1442	Nelson Piquet (P5)
Éric Bernard	Lola	24	Transmission	1542	N/A	1542	Aguri Suzuki (P18)
Ivan Capelli	Leyton House	25	Spun off	1484	N/A	1484	Maurício Gugelmin (PDNF)
Riccardo Patrese	Williams	26	Collision	1636	-23	1613	Nigel Mansell (P1)

---

Round 9 - German Grand Prix

Date: 1991-07-28

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	1715	+44	1759	Riccardo Patrese (P4)
Ayrton Senna	McLaren	2	2267	+6	2272	Gerhard Berger (P3)
Gerhard Berger	McLaren	3	1861	-6	1856	Ayrton Senna (P2)
Riccardo Patrese	Williams	4	1854	-44	1810	Nigel Mansell (P1)
Alain Prost	Ferrari	5	1898	+16	1914	Jean Alesi (P6)
Jean Alesi	Ferrari	6	1713	-16	1697	Alain Prost (P5)
Andrea de Cesaris	Jordan	7	1608	+14	1622	Bertrand Gachot (P11)
Nelson Piquet	Benetton	8	1728	+18	1746	Roberto Moreno (P9)
Roberto Moreno	Benetton	9	1570	-18	1552	Nelson Piquet (P8)
Pierluigi Martini	Minardi	10	1574	+38	1613	Gianni Morbidelli (P19)
Bertrand Gachot	Jordan	11	1389	-14	1375	Andrea de Cesaris (P7)
Ivan Capelli	Leyton House	12	1401	+45	1446	Maurício Gugelmin (P16)
Satoru Nakajima	Tyrrell	13	1267	+60	1327	Stefano Modena (P14)
Stefano Modena	Tyrrell	14	1756	-60	1696	Satoru Nakajima (P13)
Martin Brundle	Brabham	15	1515	+40	1556	Mark Blundell (P21)
Maurício Gugelmin	Leyton House	16	1548	-45	1503	Ivan Capelli (P12)
Thierry Boutsen	Ligier	17	1638	+23	1662	Érik Comas (P26)
Emanuele Pirro	Dallara	18	1583	+18	1601	Jyrki Järvilehto (P20)
Gianni Morbidelli	Minardi	19	1646	-38	1607	Pierluigi Martini (P10)
Jyrki Järvilehto	Dallara	20	1426	-18	1408	Emanuele Pirro (P18)
Mark Blundell	Brabham	21	1607	-40	1566	Martin Brundle (P15)
Aguri Suzuki	Lola	22	1414	+41	1456	Éric Bernard (P25)
Mika Häkkinen	Team Lotus	23	N/A	N/A	N/A	N/A
Nicola Larini	Lambo	24	N/A	N/A	N/A	N/A
Éric Bernard	Lola	25	1518	-41	1476	Aguri Suzuki (P22)
Érik Comas	Ligier	26	1541	-23	1517	Thierry Boutsen (P17)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	Finished	1760	+19	1779	Riccardo Patrese (P2)
Riccardo Patrese	Williams	2	Finished	1613	-19	1594	Nigel Mansell (P1)
Jean Alesi	Ferrari	3	Finished	1578	+43	1621	Alain Prost (P14)
Gerhard Berger	McLaren	4	Finished	1562	N/A	1562	Ayrton Senna (PDNF)
Andrea de Cesaris	Jordan	5	Finished	1493	+27	1520	Bertrand Gachot (P6)
Bertrand Gachot	Jordan	6	Finished	1439	-27	1412	Andrea de Cesaris (P5)
Ayrton Senna	McLaren	7	Out of fuel	1804	N/A	1804	Gerhard Berger (P4)
Roberto Moreno	Benetton	8	+1 Lap	1442	N/A	1442	Nelson Piquet (PDNF)
Thierry Boutsen	Ligier	9	+1 Lap	1731	N/A	1731	Érik Comas (PDNF)
Emanuele Pirro	Dallara	10	+1 Lap	1526	N/A	1526	Jyrki Järvilehto (PDNF)
Martin Brundle	Brabham	11	+2 Laps	1453	+39	1492	Mark Blundell (P12)
Mark Blundell	Brabham	12	+2 Laps	1531	-39	1492	Martin Brundle (P11)
Stefano Modena	Tyrrell	13	+4 Laps	1675	N/A	1675	Satoru Nakajima (PDNF)
Alain Prost	Ferrari	14	Spun off	1703	-43	1660	Jean Alesi (P3)
Ivan Capelli	Leyton House	15	Engine	1484	N/A	1484	Maurício Gugelmin (PDNF)
Jyrki Järvilehto	Dallara	16	Engine	1459	N/A	1459	Emanuele Pirro (P10)
Nelson Piquet	Benetton	17	Engine	1722	N/A	1722	Roberto Moreno (P8)
Satoru Nakajima	Tyrrell	18	Gearbox	1422	N/A	1422	Stefano Modena (P13)
Érik Comas	Ligier	19	Engine	1533	N/A	1533	Thierry Boutsen (P9)
Maurício Gugelmin	Leyton House	20	Gearbox	1545	N/A	1545	Ivan Capelli (PDNF)
Mika Häkkinen	Team Lotus	21	Engine	N/A	N/A	N/A	N/A
Aguri Suzuki	Lola	22	Engine	1412	N/A	1412	Éric Bernard (PDNF)
Gianni Morbidelli	Minardi	23	Differential	1467	N/A	1467	Pierluigi Martini (PDNF)
Pierluigi Martini	Minardi	24	Differential	1585	N/A	1585	Gianni Morbidelli (PDNF)
Éric Bernard	Lola	25	Transmission	1542	N/A	1542	Aguri Suzuki (PDNF)
Nicola Larini	Lambo	26	Spun off	N/A	N/A	N/A	N/A

---

Round 10 - Hungarian Grand Prix

Date: 1991-08-11

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2272	+5	2278	Gerhard Berger (P5)
Riccardo Patrese	Williams	2	1810	+27	1837	Nigel Mansell (P3)
Nigel Mansell	Williams	3	1759	-27	1732	Riccardo Patrese (P2)
Alain Prost	Ferrari	4	1914	+14	1929	Jean Alesi (P6)
Gerhard Berger	McLaren	5	1856	-5	1850	Ayrton Senna (P1)
Jean Alesi	Ferrari	6	1697	-14	1682	Alain Prost (P4)
Emanuele Pirro	Dallara	7	1601	+16	1617	Jyrki Järvilehto (P12)
Stefano Modena	Tyrrell	8	1696	+7	1703	Satoru Nakajima (P14)
Ivan Capelli	Leyton House	9	1446	+37	1483	Maurício Gugelmin (P13)
Martin Brundle	Brabham	10	1556	+33	1589	Mark Blundell (P20)
Nelson Piquet	Benetton	11	1746	+16	1762	Roberto Moreno (P15)
Jyrki Järvilehto	Dallara	12	1408	-16	1392	Emanuele Pirro (P7)
Maurício Gugelmin	Leyton House	13	1503	-37	1466	Ivan Capelli (P9)
Satoru Nakajima	Tyrrell	14	1327	-7	1320	Stefano Modena (P8)
Roberto Moreno	Benetton	15	1552	-16	1536	Nelson Piquet (P11)
Bertrand Gachot	Jordan	16	1375	+52	1427	Andrea de Cesaris (P17)
Andrea de Cesaris	Jordan	17	1622	-52	1570	Bertrand Gachot (P16)
Pierluigi Martini	Minardi	18	1613	+31	1644	Gianni Morbidelli (P23)
Thierry Boutsen	Ligier	19	1662	+19	1681	Érik Comas (P25)
Mark Blundell	Brabham	20	1566	-33	1533	Martin Brundle (P10)
Éric Bernard	Lola	21	1476	+30	1507	Aguri Suzuki (P22)
Aguri Suzuki	Lola	22	1456	-30	1425	Éric Bernard (P21)
Gianni Morbidelli	Minardi	23	1607	-31	1576	Pierluigi Martini (P18)
Nicola Larini	Lambo	24	N/A	N/A	N/A	N/A
Érik Comas	Ligier	25	1517	-19	1498	Thierry Boutsen (P19)
Mika Häkkinen	Team Lotus	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1804	+13	1817	Gerhard Berger (P4)
Nigel Mansell	Williams	2	Finished	1779	+16	1796	Riccardo Patrese (P3)
Riccardo Patrese	Williams	3	Finished	1594	-16	1577	Nigel Mansell (P2)
Gerhard Berger	McLaren	4	Finished	1562	-13	1549	Ayrton Senna (P1)
Jean Alesi	Ferrari	5	Finished	1621	N/A	1621	Alain Prost (PDNF)
Ivan Capelli	Leyton House	6	+1 Lap	1484	+38	1521	Maurício Gugelmin (P11)
Andrea de Cesaris	Jordan	7	+1 Lap	1520	+22	1542	Bertrand Gachot (P9)
Roberto Moreno	Benetton	8	+1 Lap	1442	N/A	1442	Nelson Piquet (PDNF)
Bertrand Gachot	Jordan	9	+1 Lap	1412	-22	1390	Andrea de Cesaris (P7)
Érik Comas	Ligier	10	+2 Laps	1533	N/A	1533	Thierry Boutsen (PDNF)
Maurício Gugelmin	Leyton House	11	+2 Laps	1545	-38	1508	Ivan Capelli (P6)
Stefano Modena	Tyrrell	12	+2 Laps	1675	+12	1688	Satoru Nakajima (P15)
Gianni Morbidelli	Minardi	13	+2 Laps	1467	N/A	1467	Pierluigi Martini (PDNF)
Mika Häkkinen	Team Lotus	14	+3 Laps	N/A	N/A	N/A	N/A
Satoru Nakajima	Tyrrell	15	+3 Laps	1422	-12	1409	Stefano Modena (P12)
Nicola Larini	Lambo	16	+3 Laps	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	17	Engine	1731	N/A	1731	Érik Comas (P10)
Pierluigi Martini	Minardi	18	Engine	1585	N/A	1585	Gianni Morbidelli (P13)
Mark Blundell	Brabham	19	Tyre	1492	N/A	1492	Martin Brundle (PDNF)
Martin Brundle	Brabham	20	Physical	1492	N/A	1492	Mark Blundell (PDNF)
Jyrki Järvilehto	Dallara	21	Engine	1459	N/A	1459	Emanuele Pirro (PDNF)
Nelson Piquet	Benetton	22	Gearbox	1722	N/A	1722	Roberto Moreno (P8)
Éric Bernard	Lola	23	Engine	1542	N/A	1542	Aguri Suzuki (PDNF)
Aguri Suzuki	Lola	24	Engine	1412	N/A	1412	Éric Bernard (PDNF)
Emanuele Pirro	Dallara	25	Engine	1526	N/A	1526	Jyrki Järvilehto (PDNF)
Alain Prost	Ferrari	26	Engine	1660	N/A	1660	Jean Alesi (P5)

---

Round 11 - Belgian Grand Prix

Date: 1991-08-25

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2278	+5	2283	Gerhard Berger (P4)
Alain Prost	Ferrari	2	1929	+12	1941	Jean Alesi (P5)
Nigel Mansell	Williams	3	1732	+41	1773	Riccardo Patrese (P17)
Gerhard Berger	McLaren	4	1850	-5	1845	Ayrton Senna (P1)
Jean Alesi	Ferrari	5	1682	-12	1670	Alain Prost (P2)
Nelson Piquet	Benetton	6	1762	+14	1776	Roberto Moreno (P8)
Michael Schumacher	Jordan	7	1500	+38	1538	Andrea de Cesaris (P11)
Roberto Moreno	Benetton	8	1536	-14	1522	Nelson Piquet (P6)
Pierluigi Martini	Minardi	9	1644	+26	1670	Gianni Morbidelli (P19)
Stefano Modena	Tyrrell	10	1703	+6	1709	Satoru Nakajima (P22)
Andrea de Cesaris	Jordan	11	1570	-38	1532	Michael Schumacher (P7)
Ivan Capelli	Leyton House	12	1483	+30	1513	Maurício Gugelmin (P15)
Mark Blundell	Brabham	13	1533	+37	1570	Martin Brundle (P16)
Jyrki Järvilehto	Dallara	14	1392	+50	1442	Emanuele Pirro (P25)
Maurício Gugelmin	Leyton House	15	1466	-30	1436	Ivan Capelli (P12)
Martin Brundle	Brabham	16	1589	-37	1552	Mark Blundell (P13)
Riccardo Patrese	Williams	17	1837	-41	1796	Nigel Mansell (P3)
Thierry Boutsen	Ligier	18	1681	+17	1698	Érik Comas (P26)
Gianni Morbidelli	Minardi	19	1576	-26	1550	Pierluigi Martini (P9)
Éric Bernard	Lola	20	N/A	N/A	N/A	N/A
Johnny Herbert	Team Lotus	21	1491	+34	1525	Mika Häkkinen (P24)
Satoru Nakajima	Tyrrell	22	1320	-6	1314	Stefano Modena (P10)
Olivier Grouillard	Fondmetal	23	N/A	N/A	N/A	N/A
Mika Häkkinen	Team Lotus	24	1513	-34	1479	Johnny Herbert (P21)
Emanuele Pirro	Dallara	25	1617	-50	1567	Jyrki Järvilehto (P14)
Érik Comas	Ligier	26	1498	-17	1481	Thierry Boutsen (P18)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1817	+11	1828	Gerhard Berger (P2)
Gerhard Berger	McLaren	2	Finished	1549	-11	1538	Ayrton Senna (P1)
Nelson Piquet	Benetton	3	Finished	1722	+11	1733	Roberto Moreno (P4)
Roberto Moreno	Benetton	4	Finished	1442	-11	1431	Nelson Piquet (P3)
Riccardo Patrese	Williams	5	Finished	1577	N/A	1577	Nigel Mansell (PDNF)
Mark Blundell	Brabham	6	Finished	1492	+32	1524	Martin Brundle (P9)
Johnny Herbert	Team Lotus	7	Finished	1393	N/A	1393	Mika Häkkinen (PDNF)
Emanuele Pirro	Dallara	8	+1 Lap	1526	N/A	1526	Jyrki Järvilehto (PDNF)
Martin Brundle	Brabham	9	+1 Lap	1492	-32	1460	Mark Blundell (P6)
Olivier Grouillard	Fondmetal	10	+1 Lap	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	11	+1 Lap	1731	N/A	1731	Érik Comas (PDNF)
Pierluigi Martini	Minardi	12	Gearbox	1585	N/A	1585	Gianni Morbidelli (PDNF)
Andrea de Cesaris	Jordan	13	Engine	1542	N/A	1542	Michael Schumacher (PDNF)
Stefano Modena	Tyrrell	14	Oil leak	1688	N/A	1688	Satoru Nakajima (P23)
Jyrki Järvilehto	Dallara	15	Oil pressure	1459	N/A	1459	Emanuele Pirro (P8)
Jean Alesi	Ferrari	16	Engine	1621	N/A	1621	Alain Prost (PDNF)
Gianni Morbidelli	Minardi	17	Gearbox	1467	N/A	1467	Pierluigi Martini (PDNF)
Mika Häkkinen	Team Lotus	18	Engine	1548	N/A	1548	Johnny Herbert (P7)
Érik Comas	Ligier	19	Engine	1533	N/A	1533	Thierry Boutsen (P11)
Nigel Mansell	Williams	20	Electrical	1796	N/A	1796	Riccardo Patrese (P5)
Éric Bernard	Lola	21	Gearbox	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	22	Engine	1521	N/A	1521	Maurício Gugelmin (PDNF)
Satoru Nakajima	Tyrrell	23	Spun off	1409	N/A	1409	Stefano Modena (PDNF)
Alain Prost	Ferrari	24	Fuel leak	1660	N/A	1660	Jean Alesi (PDNF)
Maurício Gugelmin	Leyton House	25	Engine	1508	N/A	1508	Ivan Capelli (PDNF)
Michael Schumacher	Jordan	26	Clutch	1500	N/A	1500	Andrea de Cesaris (PDNF)

---

Round 12 - Italian Grand Prix

Date: 1991-09-08

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2283	+5	2287	Gerhard Berger (P3)
Nigel Mansell	Williams	2	1773	+34	1807	Riccardo Patrese (P4)
Gerhard Berger	McLaren	3	1845	-5	1841	Ayrton Senna (P1)
Riccardo Patrese	Williams	4	1796	-34	1762	Nigel Mansell (P2)
Alain Prost	Ferrari	5	1941	+11	1952	Jean Alesi (P6)
Jean Alesi	Ferrari	6	1670	-11	1659	Alain Prost (P5)
Michael Schumacher	Benetton	7	1538	+51	1589	Nelson Piquet (P8)
Nelson Piquet	Benetton	8	1776	-51	1725	Michael Schumacher (P7)
Roberto Moreno	Jordan	9	1522	+33	1555	Andrea de Cesaris (P14)
Pierluigi Martini	Minardi	10	1670	+21	1691	Gianni Morbidelli (P17)
Mark Blundell	Brabham	11	1570	+30	1601	Martin Brundle (P19)
Ivan Capelli	Leyton House	12	1513	+25	1538	Maurício Gugelmin (P18)
Stefano Modena	Tyrrell	13	1709	+6	1715	Satoru Nakajima (P15)
Andrea de Cesaris	Jordan	14	1532	-33	1499	Roberto Moreno (P9)
Satoru Nakajima	Tyrrell	15	1314	-6	1308	Stefano Modena (P13)
Emanuele Pirro	Dallara	16	1567	+21	1588	Jyrki Järvilehto (P20)
Gianni Morbidelli	Minardi	17	1550	-21	1529	Pierluigi Martini (P10)
Maurício Gugelmin	Leyton House	18	1436	-25	1411	Ivan Capelli (P12)
Martin Brundle	Brabham	19	1552	-30	1521	Mark Blundell (P11)
Jyrki Järvilehto	Dallara	20	1442	-21	1421	Emanuele Pirro (P16)
Thierry Boutsen	Ligier	21	1698	+14	1712	Érik Comas (P22)
Érik Comas	Ligier	22	1481	-14	1467	Thierry Boutsen (P21)
Nicola Larini	Lambo	23	N/A	N/A	N/A	N/A
Éric Bernard	Lola	24	N/A	N/A	N/A	N/A
Mika Häkkinen	Team Lotus	25	N/A	N/A	N/A	N/A
Olivier Grouillard	Fondmetal	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	Finished	1796	N/A	1796	Riccardo Patrese (PDNF)
Ayrton Senna	McLaren	2	Finished	1828	+10	1838	Gerhard Berger (P4)
Alain Prost	Ferrari	3	Finished	1660	N/A	1660	Jean Alesi (PDNF)
Gerhard Berger	McLaren	4	Finished	1538	-10	1528	Ayrton Senna (P2)
Michael Schumacher	Benetton	5	Finished	1500	+51	1551	Nelson Piquet (P6)
Nelson Piquet	Benetton	6	Finished	1733	-51	1682	Michael Schumacher (P5)
Andrea de Cesaris	Jordan	7	Finished	1542	+22	1565	Roberto Moreno (P25)
Ivan Capelli	Leyton House	8	Finished	1521	+31	1552	Maurício Gugelmin (P15)
Gianni Morbidelli	Minardi	9	+1 Lap	1467	+43	1509	Pierluigi Martini (P24)
Emanuele Pirro	Dallara	10	+1 Lap	1526	N/A	1526	Jyrki Järvilehto (PDNF)
Érik Comas	Ligier	11	+1 Lap	1533	+49	1581	Thierry Boutsen (P26)
Mark Blundell	Brabham	12	+1 Lap	1524	+26	1550	Martin Brundle (P13)
Martin Brundle	Brabham	13	+1 Lap	1460	-26	1434	Mark Blundell (P12)
Mika Häkkinen	Team Lotus	14	+4 Laps	N/A	N/A	N/A	N/A
Maurício Gugelmin	Leyton House	15	+4 Laps	1508	-31	1477	Ivan Capelli (P8)
Nicola Larini	Lambo	16	+5 Laps	N/A	N/A	N/A	N/A
Olivier Grouillard	Fondmetal	17	Engine	N/A	N/A	N/A	N/A
Jyrki Järvilehto	Dallara	18	Overheating	1459	N/A	1459	Emanuele Pirro (P10)
Stefano Modena	Tyrrell	19	Engine	1688	N/A	1688	Satoru Nakajima (PDNF)
Jean Alesi	Ferrari	20	Engine	1621	N/A	1621	Alain Prost (P3)
Riccardo Patrese	Williams	21	Gearbox	1577	N/A	1577	Nigel Mansell (P1)
Satoru Nakajima	Tyrrell	22	Throttle	1409	N/A	1409	Stefano Modena (PDNF)
Éric Bernard	Lola	23	Engine	N/A	N/A	N/A	N/A
Pierluigi Martini	Minardi	24	Spun off	1585	-43	1543	Gianni Morbidelli (P9)
Roberto Moreno	Jordan	25	Spun off	1431	-22	1409	Andrea de Cesaris (P7)
Thierry Boutsen	Ligier	26	Spun off	1731	-49	1683	Érik Comas (P11)

---

Round 13 - Portuguese Grand Prix

Date: 1991-09-22

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	1762	+36	1798	Nigel Mansell (P4)
Gerhard Berger	McLaren	2	1841	+59	1900	Ayrton Senna (P3)
Ayrton Senna	McLaren	3	2287	-59	2228	Gerhard Berger (P2)
Nigel Mansell	Williams	4	1807	-36	1771	Riccardo Patrese (P1)
Alain Prost	Ferrari	5	1952	+10	1962	Jean Alesi (P6)
Jean Alesi	Ferrari	6	1659	-10	1649	Alain Prost (P5)
Maurício Gugelmin	Leyton House	7	1411	+43	1454	Ivan Capelli (P9)
Pierluigi Martini	Minardi	8	1691	+18	1709	Gianni Morbidelli (P13)
Ivan Capelli	Leyton House	9	1538	-43	1495	Maurício Gugelmin (P7)
Michael Schumacher	Benetton	10	1589	+44	1633	Nelson Piquet (P11)
Nelson Piquet	Benetton	11	1725	-44	1681	Michael Schumacher (P10)
Stefano Modena	Tyrrell	12	1715	+6	1721	Satoru Nakajima (P17)
Gianni Morbidelli	Minardi	13	1529	-18	1511	Pierluigi Martini (P8)
Andrea de Cesaris	Jordan	14	1499	+37	1536	Roberto Moreno (P21)
Mark Blundell	Brabham	15	1601	+25	1626	Martin Brundle (P19)
Emanuele Pirro	Dallara	16	1588	+18	1606	Jyrki Järvilehto (P18)
Satoru Nakajima	Tyrrell	17	1308	-6	1302	Stefano Modena (P12)
Jyrki Järvilehto	Dallara	18	1421	-18	1403	Emanuele Pirro (P16)
Martin Brundle	Brabham	19	1521	-25	1496	Mark Blundell (P15)
Thierry Boutsen	Ligier	20	1712	+13	1724	Érik Comas (P23)
Roberto Moreno	Jordan	21	1555	-37	1518	Andrea de Cesaris (P14)
Michele Alboreto	Footwork	22	N/A	N/A	N/A	N/A
Érik Comas	Ligier	23	1467	-13	1455	Thierry Boutsen (P20)
Mika Häkkinen	Team Lotus	24	1479	+36	1515	Johnny Herbert (P26)
Aguri Suzuki	Lola	25	N/A	N/A	N/A	N/A
Johnny Herbert	Team Lotus	26	1525	-36	1489	Mika Häkkinen (P24)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Riccardo Patrese	Williams	1	Finished	1577	N/A	1577	Nigel Mansell (PDNF)
Ayrton Senna	McLaren	2	Finished	1838	N/A	1838	Gerhard Berger (PDNF)
Jean Alesi	Ferrari	3	Finished	1621	N/A	1621	Alain Prost (PDNF)
Pierluigi Martini	Minardi	4	Finished	1543	+29	1572	Gianni Morbidelli (P9)
Nelson Piquet	Benetton	5	Finished	1682	+20	1703	Michael Schumacher (P6)
Michael Schumacher	Benetton	6	Finished	1551	-20	1530	Nelson Piquet (P5)
Maurício Gugelmin	Leyton House	7	+1 Lap	1477	+39	1516	Ivan Capelli (P17)
Andrea de Cesaris	Jordan	8	+1 Lap	1565	+19	1583	Roberto Moreno (P10)
Gianni Morbidelli	Minardi	9	+1 Lap	1509	-29	1480	Pierluigi Martini (P4)
Roberto Moreno	Jordan	10	+1 Lap	1409	-19	1390	Andrea de Cesaris (P8)
Érik Comas	Ligier	11	+1 Lap	1581	+41	1622	Thierry Boutsen (P16)
Martin Brundle	Brabham	12	+2 Laps	1434	N/A	1434	Mark Blundell (PDNF)
Satoru Nakajima	Tyrrell	13	+3 Laps	1409	N/A	1409	Stefano Modena (PDNF)
Mika Häkkinen	Team Lotus	14	+3 Laps	1548	N/A	1548	Johnny Herbert (PDNF)
Michele Alboreto	Footwork	15	+3 Laps	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	16	+3 Laps	1683	-41	1642	Érik Comas (P11)
Ivan Capelli	Leyton House	17	Spun off	1552	-39	1513	Maurício Gugelmin (P7)
Stefano Modena	Tyrrell	18	Engine	1688	N/A	1688	Satoru Nakajima (P13)
Nigel Mansell	Williams	19	Disqualified	1796	N/A	1796	Riccardo Patrese (P1)
Aguri Suzuki	Lola	20	Transmission	N/A	N/A	N/A	N/A
Alain Prost	Ferrari	21	Engine	1660	N/A	1660	Jean Alesi (P3)
Gerhard Berger	McLaren	22	Engine	1528	N/A	1528	Ayrton Senna (P2)
Emanuele Pirro	Dallara	23	Engine	1526	N/A	1526	Jyrki Järvilehto (PDNF)
Jyrki Järvilehto	Dallara	24	Gearbox	1459	N/A	1459	Emanuele Pirro (PDNF)
Mark Blundell	Brabham	25	Suspension	1550	N/A	1550	Martin Brundle (P12)
Johnny Herbert	Team Lotus	26	Engine	1393	N/A	1393	Mika Häkkinen (P14)

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Round 14 - Spanish Grand Prix

Date: 1991-09-29

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Gerhard Berger	McLaren	1	1900	+56	1956	Ayrton Senna (P3)
Nigel Mansell	Williams	2	1771	+34	1806	Riccardo Patrese (P4)
Ayrton Senna	McLaren	3	2228	-56	2172	Gerhard Berger (P1)
Riccardo Patrese	Williams	4	1798	-34	1763	Nigel Mansell (P2)
Michael Schumacher	Benetton	5	1633	+36	1670	Nelson Piquet (P10)
Alain Prost	Ferrari	6	1962	+9	1971	Jean Alesi (P7)
Jean Alesi	Ferrari	7	1649	-9	1640	Alain Prost (P6)
Ivan Capelli	Leyton House	8	1495	+28	1523	Maurício Gugelmin (P13)
Emanuele Pirro	Dallara	9	1606	+15	1621	Jyrki Järvilehto (P15)
Nelson Piquet	Benetton	10	1681	-36	1644	Michael Schumacher (P5)
Martin Brundle	Brabham	11	1496	+43	1540	Mark Blundell (P12)
Mark Blundell	Brabham	12	1626	-43	1582	Martin Brundle (P11)
Maurício Gugelmin	Leyton House	13	1454	-28	1426	Ivan Capelli (P8)
Stefano Modena	Tyrrell	14	1721	+5	1726	Satoru Nakajima (P18)
Jyrki Järvilehto	Dallara	15	1403	-15	1388	Emanuele Pirro (P9)
Gianni Morbidelli	Minardi	16	1511	+49	1559	Pierluigi Martini (P19)
Andrea de Cesaris	Jordan	17	1536	+29	1565	Alessandro Zanardi (P20)
Satoru Nakajima	Tyrrell	18	1302	-5	1297	Stefano Modena (P14)
Pierluigi Martini	Minardi	19	1709	-49	1661	Gianni Morbidelli (P16)
Alessandro Zanardi	Jordan	20	1500	-29	1471	Andrea de Cesaris (P17)
Mika Häkkinen	Team Lotus	21	N/A	N/A	N/A	N/A
Gabriele Tarquini	Fondmetal	22	N/A	N/A	N/A	N/A
Éric Bernard	Lola	23	N/A	N/A	N/A	N/A
Michele Alboreto	Footwork	24	N/A	N/A	N/A	N/A
Érik Comas	Ligier	25	1455	+53	1507	Thierry Boutsen (P26)
Thierry Boutsen	Ligier	26	1724	-53	1672	Érik Comas (P25)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Nigel Mansell	Williams	1	Finished	1796	+14	1810	Riccardo Patrese (P3)
Alain Prost	Ferrari	2	Finished	1660	+28	1688	Jean Alesi (P4)
Riccardo Patrese	Williams	3	Finished	1577	-14	1563	Nigel Mansell (P1)
Jean Alesi	Ferrari	4	Finished	1621	-28	1593	Alain Prost (P2)
Ayrton Senna	McLaren	5	Finished	1838	N/A	1838	Gerhard Berger (PDNF)
Michael Schumacher	Benetton	6	Finished	1530	+47	1577	Nelson Piquet (P11)
Maurício Gugelmin	Leyton House	7	+1 Lap	1516	+32	1548	Ivan Capelli (P24)
Jyrki Järvilehto	Dallara	8	+1 Lap	1459	+38	1497	Emanuele Pirro (P15)
Alessandro Zanardi	Jordan	9	+1 Lap	1500	N/A	1500	Andrea de Cesaris (PDNF)
Martin Brundle	Brabham	10	+2 Laps	1434	N/A	1434	Mark Blundell (PDNF)
Nelson Piquet	Benetton	11	+2 Laps	1703	-47	1656	Michael Schumacher (P6)
Gabriele Tarquini	Fondmetal	12	+2 Laps	N/A	N/A	N/A	N/A
Pierluigi Martini	Minardi	13	+2 Laps	1572	+24	1596	Gianni Morbidelli (P14)
Gianni Morbidelli	Minardi	14	Collision	1480	-24	1456	Pierluigi Martini (P13)
Emanuele Pirro	Dallara	15	+3 Laps	1526	-38	1488	Jyrki Järvilehto (P8)
Stefano Modena	Tyrrell	16	+3 Laps	1688	+11	1698	Satoru Nakajima (P17)
Satoru Nakajima	Tyrrell	17	+3 Laps	1409	-11	1399	Stefano Modena (P16)
Mark Blundell	Brabham	18	Engine	1550	N/A	1550	Martin Brundle (P10)
Érik Comas	Ligier	19	Electrical	1622	N/A	1622	Thierry Boutsen (P26)
Gerhard Berger	McLaren	20	Electrical	1528	N/A	1528	Ayrton Senna (P5)
Michele Alboreto	Footwork	21	Engine	N/A	N/A	N/A	N/A
Andrea de Cesaris	Jordan	22	Electrical	1583	N/A	1583	Alessandro Zanardi (P9)
Mika Häkkinen	Team Lotus	23	Spun off	N/A	N/A	N/A	N/A
Ivan Capelli	Leyton House	24	Collision	1513	-32	1481	Maurício Gugelmin (P7)
Éric Bernard	Lola	25	Collision	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	26	Collision	1642	N/A	1642	Érik Comas (PDNF)

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Round 15 - Japanese Grand Prix

Date: 1991-10-20

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Gerhard Berger	McLaren	1	1956	+50	2005	Ayrton Senna (P2)
Ayrton Senna	McLaren	2	2172	-50	2123	Gerhard Berger (P1)
Nigel Mansell	Williams	3	1806	+28	1834	Riccardo Patrese (P5)
Alain Prost	Ferrari	4	1971	+8	1979	Jean Alesi (P6)
Riccardo Patrese	Williams	5	1763	-28	1735	Nigel Mansell (P3)
Jean Alesi	Ferrari	6	1640	-8	1632	Alain Prost (P4)
Pierluigi Martini	Minardi	7	1661	+23	1684	Gianni Morbidelli (P8)
Gianni Morbidelli	Minardi	8	1559	-23	1536	Pierluigi Martini (P7)
Michael Schumacher	Benetton	9	1670	+30	1699	Nelson Piquet (P10)
Nelson Piquet	Benetton	10	1644	-30	1615	Michael Schumacher (P9)
Andrea de Cesaris	Jordan	11	1565	+24	1588	Alessandro Zanardi (P13)
Jyrki Järvilehto	Dallara	12	1388	+51	1439	Emanuele Pirro (P16)
Alessandro Zanardi	Jordan	13	1471	-24	1448	Andrea de Cesaris (P11)
Stefano Modena	Tyrrell	14	1726	+5	1731	Satoru Nakajima (P15)
Satoru Nakajima	Tyrrell	15	1297	-5	1292	Stefano Modena (P14)
Emanuele Pirro	Dallara	16	1621	-51	1570	Jyrki Järvilehto (P12)
Thierry Boutsen	Ligier	17	1672	+18	1690	Érik Comas (P20)
Maurício Gugelmin	Leyton House	18	1426	+39	1464	Karl Wendlinger (P22)
Martin Brundle	Brabham	19	N/A	N/A	N/A	N/A
Érik Comas	Ligier	20	1507	-18	1489	Thierry Boutsen (P17)
Mika Häkkinen	Team Lotus	21	1515	+30	1545	Johnny Herbert (P23)
Karl Wendlinger	Leyton House	22	1500	-39	1461	Maurício Gugelmin (P18)
Johnny Herbert	Team Lotus	23	1489	-30	1459	Mika Häkkinen (P21)
Gabriele Tarquini	Fondmetal	24	N/A	N/A	N/A	N/A
Aguri Suzuki	Lola	25	N/A	N/A	N/A	N/A
Alex Caffi	Footwork	26	N/A	N/A	N/A	N/A

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Gerhard Berger	McLaren	1	Finished	1528	+55	1583	Ayrton Senna (P2)
Ayrton Senna	McLaren	2	Finished	1838	-55	1783	Gerhard Berger (P1)
Riccardo Patrese	Williams	3	Finished	1563	+52	1615	Nigel Mansell (P19)
Alain Prost	Ferrari	4	Finished	1688	N/A	1688	Jean Alesi (PDNF)
Martin Brundle	Brabham	5	+1 Lap	N/A	N/A	N/A	N/A
Stefano Modena	Tyrrell	6	+1 Lap	1698	+10	1708	Satoru Nakajima (P16)
Nelson Piquet	Benetton	7	+1 Lap	1656	N/A	1656	Michael Schumacher (PDNF)
Maurício Gugelmin	Leyton House	8	+1 Lap	1548	+28	1575	Karl Wendlinger (P25)
Thierry Boutsen	Ligier	9	+1 Lap	1642	N/A	1642	Érik Comas (PDNF)
Alex Caffi	Footwork	10	+2 Laps	N/A	N/A	N/A	N/A
Gabriele Tarquini	Fondmetal	11	+3 Laps	N/A	N/A	N/A	N/A
Érik Comas	Ligier	12	Alternator	1622	N/A	1622	Thierry Boutsen (P9)
Pierluigi Martini	Minardi	13	Electrical	1596	N/A	1596	Gianni Morbidelli (PDNF)
Michael Schumacher	Benetton	14	Engine	1577	N/A	1577	Nelson Piquet (P7)
Johnny Herbert	Team Lotus	15	Engine	1393	N/A	1393	Mika Häkkinen (PDNF)
Satoru Nakajima	Tyrrell	16	Spun off	1399	-10	1389	Stefano Modena (P6)
Aguri Suzuki	Lola	17	Engine	N/A	N/A	N/A	N/A
Gianni Morbidelli	Minardi	18	Wheel	1456	N/A	1456	Pierluigi Martini (PDNF)
Nigel Mansell	Williams	19	Spun off	1810	-52	1758	Riccardo Patrese (P3)
Alessandro Zanardi	Jordan	20	Gearbox	1500	N/A	1500	Andrea de Cesaris (P22)
Mika Häkkinen	Team Lotus	21	Engine	1548	N/A	1548	Johnny Herbert (PDNF)
Andrea de Cesaris	Jordan	22	Accident	1583	N/A	1583	Alessandro Zanardi (PDNF)
Jyrki Järvilehto	Dallara	23	Accident	1497	+31	1528	Emanuele Pirro (P24)
Emanuele Pirro	Dallara	24	Accident	1488	-31	1457	Jyrki Järvilehto (P23)
Karl Wendlinger	Leyton House	25	Accident	1500	-28	1472	Maurício Gugelmin (P8)
Jean Alesi	Ferrari	26	Engine	1593	N/A	1593	Alain Prost (P4)

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Round 16 - Australian Grand Prix

Date: 1991-11-03

Qualifying Results

Driver	Constructor	Grid	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	2123	+22	2144	Gerhard Berger (P2)
Gerhard Berger	McLaren	2	2005	-22	1984	Ayrton Senna (P1)
Nigel Mansell	Williams	3	1834	+23	1857	Riccardo Patrese (P4)
Riccardo Patrese	Williams	4	1735	-23	1712	Nigel Mansell (P3)
Nelson Piquet	Benetton	5	1615	+40	1654	Michael Schumacher (P6)
Michael Schumacher	Benetton	6	1699	-40	1660	Nelson Piquet (P5)
Jean Alesi	Ferrari	7	1632	+23	1655	Gianni Morbidelli (P8)
Gianni Morbidelli	Ferrari	8	1536	-23	1513	Jean Alesi (P7)
Stefano Modena	Tyrrell	9	1731	+5	1736	Satoru Nakajima (P24)
Pierluigi Martini	Minardi	10	1684	+18	1702	Roberto Moreno (P18)
Jyrki Järvilehto	Dallara	11	1439	+44	1482	Emanuele Pirro (P13)
Andrea de Cesaris	Jordan	12	1588	+20	1608	Alessandro Zanardi (P16)
Emanuele Pirro	Dallara	13	1570	-44	1527	Jyrki Järvilehto (P11)
Maurício Gugelmin	Leyton House	14	1464	+32	1496	Karl Wendlinger (P26)
Michele Alboreto	Footwork	15	1450	+45	1496	Alex Caffi (P23)
Alessandro Zanardi	Jordan	16	1448	-20	1428	Andrea de Cesaris (P12)
Mark Blundell	Brabham	17	N/A	N/A	N/A	N/A
Roberto Moreno	Minardi	18	1518	-18	1500	Pierluigi Martini (P10)
Nicola Larini	Lambo	19	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	20	1690	+15	1705	Érik Comas (P22)
Johnny Herbert	Team Lotus	21	1459	+40	1499	Mika Häkkinen (P25)
Érik Comas	Ligier	22	1489	-15	1474	Thierry Boutsen (P20)
Alex Caffi	Footwork	23	1605	-45	1560	Michele Alboreto (P15)
Satoru Nakajima	Tyrrell	24	1292	-5	1287	Stefano Modena (P9)
Mika Häkkinen	Team Lotus	25	1545	-40	1505	Johnny Herbert (P21)
Karl Wendlinger	Leyton House	26	1461	-32	1430	Maurício Gugelmin (P14)

Race Results

Driver	Constructor	Position	Status	Starting Elo	Change	New Elo	vs Teammate
Ayrton Senna	McLaren	1	Finished	1783	+15	1799	Gerhard Berger (P3)
Nigel Mansell	Williams	2	Finished	1758	+19	1778	Riccardo Patrese (P5)
Gerhard Berger	McLaren	3	Finished	1583	-15	1567	Ayrton Senna (P1)
Nelson Piquet	Benetton	4	Finished	1656	+25	1681	Michael Schumacher (P22)
Riccardo Patrese	Williams	5	Finished	1615	-19	1595	Nigel Mansell (P2)
Gianni Morbidelli	Ferrari	6	Finished	1456	+44	1500	Jean Alesi (P23)
Emanuele Pirro	Dallara	7	Finished	1457	+38	1495	Jyrki Järvilehto (P12)
Andrea de Cesaris	Jordan	8	Finished	1583	+24	1608	Alessandro Zanardi (P9)
Alessandro Zanardi	Jordan	9	Finished	1500	-24	1476	Andrea de Cesaris (P8)
Stefano Modena	Tyrrell	10	Finished	1708	+9	1717	Satoru Nakajima (P26)
Johnny Herbert	Team Lotus	11	Finished	1393	+45	1438	Mika Häkkinen (P19)
Jyrki Järvilehto	Dallara	12	Finished	1528	-38	1490	Emanuele Pirro (P7)
Michele Alboreto	Footwork	13	Finished	1451	+42	1493	Alex Caffi (P15)
Maurício Gugelmin	Leyton House	14	+1 Lap	1575	+23	1598	Karl Wendlinger (P20)
Alex Caffi	Footwork	15	+1 Lap	1561	-42	1519	Michele Alboreto (P13)
Roberto Moreno	Minardi	16	+1 Lap	1390	+49	1439	Pierluigi Martini (P21)
Mark Blundell	Brabham	17	+1 Lap	N/A	N/A	N/A	N/A
Érik Comas	Ligier	18	+1 Lap	1622	+34	1656	Thierry Boutsen (P25)
Mika Häkkinen	Team Lotus	19	+2 Laps	1548	-45	1503	Johnny Herbert (P11)
Karl Wendlinger	Leyton House	20	+2 Laps	1472	-23	1450	Maurício Gugelmin (P14)
Pierluigi Martini	Minardi	21	Spun off	1596	-49	1547	Roberto Moreno (P16)
Michael Schumacher	Benetton	22	Spun off	1577	-25	1552	Nelson Piquet (P4)
Jean Alesi	Ferrari	23	Accident	1593	-44	1549	Gianni Morbidelli (P6)
Nicola Larini	Lambo	24	Spun off	N/A	N/A	N/A	N/A
Thierry Boutsen	Ligier	25	Accident	1642	-34	1608	Érik Comas (P18)
Satoru Nakajima	Tyrrell	26	Spun off	1389	-9	1380	Stefano Modena (P10)

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