«1991-13»	Portugal Grand Prix - XX Grande Premio de Portugal
1991-09-22	Estoril - Autódromo Fernanda Pires da Silva - 71 laps × 4.35 km : 308.85 km

EntrantsQualyGridRaceLap-by-LapFastest Laps•Driver StandingsConstructor Standings

Pos	Qualy	Car	Driver	Constructor
1	1	6	Riccardo Patrese	Williams • Renault
2	2	2	Gerhard Berger	McLaren • Honda
3	3	1	Ayrton Senna	McLaren • Honda
4	4	5	Nigel Mansell	Williams • Renault
5	5	27	Alain Prost	Ferrari
6	6	28	Jean Alesi	Ferrari
7	7	15	Mauricio Gugelmin	Leyton House • Ilmor
8	8	23	Pierluigi Martini	Minardi • Ferrari
9	9	16	Ivan Capelli	Leyton House • Ilmor
10	10	19	Michael Schumacher	Benetton • Ford Cosworth
11	11	20	Nelson Piquet	Benetton • Ford Cosworth
12	12	4	Stefano Modena	Tyrrell • Honda
13	13	24	Gianni Morbidelli	Minardi • Ferrari
14	14	33	Andrea de Cesaris	Jordan • Ford Cosworth
15	15	8	Mark Blundell	Brabham • Yamaha
16	16	32	Roberto Moreno	Jordan • Ford Cosworth
17	17	21	Emanuele Pirro	Dallara • Judd
18	18	22	JJ Lehto	Dallara • Judd
19	19	7	Martin Brundle	Brabham • Yamaha
20	20	25	Thierry Boutsen	Ligier • Lamborghini
21	21	3	Satoru Nakajima	Tyrrell • Honda
22	22	12	Johnny Herbert	Lotus • Judd
23	23	26	Erik Comas	Ligier • Lamborghini
24	24	9	Michele Alboreto	Footwork • Ford Cosworth
25	25	30	Aguri Suzuki	Lola • Ford Cosworth
26	26	11	Mika Hakkinen	Lotus • Judd