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Formula 1 - Portugal - Estoril - 1991 - Detailed results
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Results 1991
Portugal - Estoril 1991
Portugal - 22 September 1991
Portugal - Estoril - 22 September 1991
| 1 |  Riccardo Patrese (ITA) | Williams-Renault | 1:35'42.304 |
| 2 |  Ayrton Senna (BRA) | Mclaren-Honda | + 20.941 |
| 3 |  Jean Alesi (FRA) | Ferrari | + 53.554 |
| 4 | Pierluigi Martini (ITA) | Minardi-Ferrari | + 1'03.498 |
| 5 | Nelson Piquet (BRA) | Benetton-Ford | + 1'10.033 |
| 6 |  Michael Schumacher (GER) | Benetton-Ford | + 1'16.582 |
| 7 | Mauricio Gugelmin (BRA) | Leyton House-Ilmor | + 1 Lap |
| 8 | Andrea De Cesaris (ITA) | Jordan - Ford | + 1 Lap |
| 9 | Gianni Morbidelli (ITA) | Ferrari | + 1 Lap |
| 10 | Roberto Moreno (BRA) | Minardi-Ferrari | +1 Lap |
| 11 | Eric Comas (FRA) | Ligier-Lamborghini | + 1 Lap |
| 12 |  Martin Brundle (GBR) | Brabham-Yamaha | + 2 Laps |
| 13 |  Satoru Nakajima (JPN) | Tyrrell-Honda | + 3 Laps |
| 14 |  Mika Hakkinen (FIN) | Lotus-Judd | + 3 Laps |
| 15 | Michele Alboreto (ITA) | Footwork-Porsche | + 3 Laps |
| 16 |  Thierry Boutsen (BEL) | Ligier-Lamborghini | + 3 Lpas |
| 17 | Ivan Capelli (ITA) | Leyton House-Ilmor | Spun Off |
| 18 | Stefano Modena (ITA) | Tyrrell-Honda | Out |
| 19 | Nigel Mansell (GBR) | Williams-Renault | Out |
| 20 | Aguri Suzuki (JPN) | Lola-Ford | Out |
| 21 | Alain Prost (FRA) | Ferrari | Out |
| 22 |  Gerhard Berger (AUT) | Mclaren-Honda | Out |
| 23 | Emanuele Pirro (ITA) | Dallara-Judd | Out |
| 24 | Jyrki Jarvilehto Lehto (FIN) | Dallara-Judd | Out |
| 25 | Mark Blundell (GBR) | Brabham-Yamaha | Out |