Portuguese Grand Prix 1991 Estoril 22 September
Pos. No Driver Nat. Entrant Chassis Engine Laps Result Points Grid 1 06 Riccardo Patrese ITA Canon Williams Team Williams FW14 Renault 71 1h35m42.304s 10 1 2 01 Ayrton Senna BRA Honda Marlboro McLaren McLaren MP4/6 Honda 71 1h36m03.245s 6 3 3 28 Jean Alesi FRA Scuderia Ferrari SpA Ferrari F643 Ferrari 71 1h36m35.858s 4 6 4 23 Pierluigi Martini ITA SCM Minardi Team Minardi M191 Ferrari 71 1h36m45.802s 3 8 5 20 Nelson Piquet BRA Camel Benetton Ford Benetton B191 Ford 71 1h36m52.337s 2 11 6 19 Michael Schumacher GER Camel Benetton Ford Benetton B191 Ford 71 1h36m58.886s 1 10 7 15 Mauricio Gugelmin BRA Leyton House Racing Leyton House CG911 Ilmor 70 - - 7 8 33 Andrea De Cesaris ITA Team 7UP Jordan Jordan 191 Ford 70 - - 14 9 24 Gianni Morbidelli ITA SCM Minardi Team Minardi M191 Ferrari 70 - - 13 10 32 Roberto Moreno BRA Team 7UP Jordan Jordan 191 Ford 70 - - 16 11 26 Erik Comas FRA Ligier Gitanes Ligier JS35B Lamborghini 70 - - 23 12 07 Martin Brundle GBR Motor Racing Developments Brabham BT60Y Yamaha 69 - - 19 13 03 Satoru Nakajima JAP Braun Tyrrell Honda Tyrrell 020 Honda 68 - - 21 14 11 Mika Häkkinen FIN Team Lotus Lotus 102B Judd 68 - - 26 15 09 Michele Alboreto ITA Footwork Footwork A12 Ford 68 - - 24 16 25 Thierry Boutsen BEL Ligier Gitanes Ligier JS35B Lamborghini 68 - - 20 17 16 Ivan Capelli ITA Leyton House Racing Leyton House CG911 Ilmor 64 Nose Cone - 9 R 04 Stefano Modena ITA Braun Tyrrell Honda Tyrrell 020 Honda 56 Engine - 12 DQ 05 Nigel Mansell GBR Canon Williams Team Williams FW14 Renault 51 Illegal Pit Stop - 4 R 30 Aguri Suzuki JAP Larrousse Lola L91 Ford 40 Gearbox - 25 R 27 Alain Prost FRA Scuderia Ferrari SpA Ferrari F643 Ferrari 39 Engine - 5 R 02 Gerhard Berger AUT Honda Marlboro McLaren McLaren MP4/6 Honda 37 Engine - 3 R 21 Emanuele Pirro ITA Scuderia Italia Dallara 191 Judd 18 Engine - 17 R 22 J J Lehto FIN Scuderia Italia Dallara 191 Judd 14 Gear Linkage - 18 R 08 Mark Blundell GBR Motor Racing Developments Brabham BT60Y Yamaha 12 Suspension - 15 R 12 Johnny Herbert GBR Team Lotus Lotus 102B Judd 1 Engine - 22 DNQ 29 Eric Bernard FRA Larrousse Lola L91 Ford - - - - DNQ 17 Gabriele Tarquini GBR Automobiles Gonfaronaise Sportive AGS JH27 Ford - - - - DNQ 34 Nicola Larini ITA Modena Team Lambo 291 Lamborghini - - - - DNQ 35 Eric Van De Poele BEL Modena Team Lambo 291 Lamborghini - - - - DNPQ 18 Fabrizio Barbazza ITA Automobiles Gonfaronaise Sportive AGS JH27 Ford - - - - DNPQ 14 Olivier Grouillard FRA Fondmetal F1 Fomet F1 Ford - - - - DNPQ 10 Alex Caffi ITA Footwork Footwork A12 Ford - - - - DNPQ 31 Pedro Matos Chaves POR Coloni Racing Srl Coloni C4 Ford - - - - Lap Leaders Total Riccardo Patrese 1-17, 30-71 59 Nigel Mansell 18-29 12 NC=Not Classified NT=No time set in qualifying R=Retired EX=Excluded from meeting W=Withdrawn DQ=Disqualified DNS=Did not start DNQ=Did not qualify DNPQ=Did not pre-qualify Pole Position (1m13.001s) Pole Position and Fastest Lap Fastest Lap (1m18.179s)
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Current Championship Standings

Position Driver Nat. Points 1 Ayrton Senna BRA 83 2 Nigel Mansell GBR 59 3 Riccardo Patrese ITA 44 4 Gerhard Berger AUT 31 5= Alain Prost FRA 25 5= Nelson Piquet BRA 25