De 1991 Portuguese Grand Prix werd gewonnnen door Riccardo Patrese van Williams.
De race in Portugal was ronde 13 van 16 van het 1991 seizoen.
The 1991 Portuguese Grand Prix was a Formula One motor race held at the Autódromo do Estoril on 22 September 1991. It was the thirteenth round of the 1991 Formula One season. The 71-lap race was won by Williams driver Riccardo Patrese after he started from pole position. Ayrton Senna finished second for the McLaren team with Ferrari driver Jean Alesi third.
bron: Wikipedia
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