1991 Monaco Grand Prix

JJ Lehto was fastest for Dallara, with Emanuele Pirro in third, with Jordan's Andrea de Cesaris and Bertrand Gachot second and fourth.

Alex Caffi had a huge accident in the swimming pool section on Saturday, after missing Thursday qualifying with a gearbox problem, and did not participate in the race.

Meanwhile, Andrea de Cesaris in the Jordan was eventually catching up to Jean Alesi and just outside the points in 7th place before retiring shortly after battling with the second Ferrari with a sticking throttle.

Devote on lap 25 with braking problems, as Modena's teammate Satoru Nakajima had spun and retired at the Nouvelle Chicane after making contact with Martini.

Most of Senna's chasers were eliminated on lap 42 when Modena's engine blew in the tunnel, spreading oil on the track which caused Patrese to crash.

The race was won by Ayrton Senna in the McLaren .
Nigel Mansell finished in second place, scoring his first points of the season.
Mansell's team-mate, Riccardo Patrese , ran in third place until crashing on oil dropped by Stefano Modena , whose engine expired just ahead of him.
Alain Prost finished in fifth position after being delayed by a slow late-race pit stop.