1991 Grand Prix of the USA
10 March - Phoenix: 305.122km (3.721km x 82 laps)
Race aborted after 2 hours on lap 81 (301.385 km).
Pole Position: Ayrton Senna, McLaren-Honda MP4/6, 1:21.434
Results
1. Ayrton Senna McLaren-Honda MP4/6 2:00:47.828 (149.698 km/h)
2. Alain Prost Ferrari 642 - 16.322
3. Nelson Piquet Benetton-Ford B190B - 17.376
4. Stefano Modena Tyrrell-Honda 020 - 25.409
5. Satoru Nakajima Tyrrell-Honda 020 - 1 lap
6. Aguri Suzuki Lola-Ford L91 - 2 laps
7. Nicola Larini Lamborghini 291 - 3 laps
8. Gabriele Tarquini AGS-Ford JH25 - 4 laps
9. Pierluigi Martini Minardi-Ferrari M191 - 6 laps (Engine)
10. Bertrand Gachot Jordan-Ford 191 - 6 laps (Engine)
11. Martin Brundle Brabham-Yamaha BT59Y - 8 laps
12. Jean Alesi Ferrari 642 - 9 laps (Gearbox)
Fastest lap: Jean Alesi, 1:26.758 (154.394 km/h on lap 49)
Retirements
Mika Häkkinen Lotus-Judd 102B - 22 laps (Oil union/Fire)
Roberto Moreno Benetton-Ford B190B - 32 laps (Accident)
Riccardo Patrese Williams-Renault FW14 - 32 laps (Gearbox/Accident)
Michele Alboreto Footwork-Porsche A11C - 40 laps (Gearbox)
Thierry Boutsen Ligier-Lamborghini JS35 - 41 laps (Electrics)
Ivan Capelli Leyton House-Ilmor CG911 - 41 laps (Gearbox)
Gerhard Berger McLaren-Honda MP4/6 - 45 laps (Fuel pump)
Nigel Mansell Williams-Renault FW14 - 46 laps (Gearbox)
Mauricio Gugelmin Leyton House-Ilmor CG911 - 47 laps (Gearbox)
Mark Blundell Brabham-Yamaha BT59Y - 49 laps (Spun)
Emanuele Pirro Dallara-Judd 191 - 65 laps (Gearbox)
Gianni Morbidelli Minardi-Ferrari M191 - 66 laps (Gearbox)
J.J. Lehto Dallara-Judd 191 - 69 laps (Clutch)
Eric Bernard Lola-Ford L91 - 77 laps (Engine)
Did Not Qualify
Alex Caffi Footwork-Porsche A11C
Stefan Johansson AGS-Ford JH25
Erik Comas Ligier-Lamborghini JS35
Julian Bailey Lotus-Judd 102B
Did Not Pre-qualify
Andrea de Cesaris Jordan-Ford 191
Pedro Chaves Coloni-Ford C4
Olivier Grouillard Fomet-Ford FA1M-E
Eric van de Poele Lamborghini 291
Race leaders:
Ayrton Senna 1-81 (81 laps = 301.385 km)
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Starting Grid
1. Ayrton Senna McLaren-Honda MP4/6 1:21.434 (164.488 km/h)
2. Alain Prost Ferrari 642 - 1.121
3. Riccardo Patrese Williams-Renault FW14 - 1.399
4. Nigel Mansell Williams-Renault FW14 - 1.784
5. Nelson Piquet Benetton-Ford B190B - 1.950
6. Jean Alesi Ferrari 642 - 2.085
7. Gerhard Berger McLaren-Honda MP4/6 - 2.308
8. Roberto Moreno Benetton-Ford B190B - 2.447
9. Emanuele Pirro Dallara-Judd 191 - 3.358
10. J.J. Lehto Dallara-Judd 191 - 3.457
11. Stefano Modena Tyrrell-Honda 020 - 3.631
12. Martin Brundle Brabham-Yamaha BT59Y - 3.951
13. Mika Häkkinen Lotus-Judd 102B - 4.014
14. Bertrand Gachot Jordan-Ford 191 - 4.267
15. Pierluigi Martini Minardi-Ferrari M191 - 4.281
16. Satoru Nakajima Tyrrell-Honda 020 - 4.318
17. Nicola Larini Lamborghini 291 - 4.357
18. Ivan Capelli Leyton House-Ilmor CG911 - 4.687
19. Eric Bernard Lola-Ford L91 - 4.991
20. Thierry Boutsen Ligier-Lamborghini JS35 - 5.066
21. Aguri Suzuki Lola-Ford L91 - 5.114
22. Gabriele Tarquini AGS-Ford JH25 - 5.417
23. Mauricio Gugelmin Leyton House-Ilmor CG911 - 5.431
24. Mark Blundell Brabham-Yamaha BT59Y - 5.481
25. Michele Alboreto Footwork-Porsche A11C - 5.581
26. Gianni Morbidelli Minardi-Ferrari M191 - 5.608
Did Not Qualify
27. Alex Caffi Footwork-Porsche A11C - 6.085
28. Stefan Johansson AGS-Ford JH25 - 6.319
29. Erik Comas Ligier-Lamborghini JS35 - 6.470
30. Julian Bailey Lotus-Judd 102B - 7.136
Did Not Pre-qualify
31. Andrea de Cesaris Jordan-Ford 191 - 9.503
32. Pedro Chaves Coloni-Ford C4 - 9.679
33. Olivier Grouillard Fomet-Ford FA1M-E - 10.692
34. Eric van de Poele Lamborghini 291 - 15.612