Nicola Larini. In a better showing than in previous races, Joachim Winkelhock was ninth in his AGS, followed by Volker Weidler in the Rial. Then came the two Zakspeeds of Bernd Schneider and Aguri Suzuki, with Bertrand Gachot slowest in the other Onyx, after a CV joint failed on his car, and the spare car would not start. Pre-qualifying classification Qualifying report In qualifying on Friday, Ayrton Senna went progressively faster and faster, eventually posting a time 1.5 seconds ahead of McLaren teammate Alain Prost and the rest of the field. Senna's Friday time of 1:30.710 stood up through the second session and gave him his 34th career pole position, breaking Jim Clark's record of 33 which he had equalled in the previous race in Mexico. During the morning practice on Saturday, Prost spun backward into a wall and damaged the monocoque and gearbox. It was the first monocoque Prost had broken since joining the team in . Prost then had to take Senna's spare car for the race. The only American driver in the field, Phoenix native Eddie Cheever, qualified his Arrows-Ford in 17th place, some 3.1 seconds slower than pole man Senna. Qualifying classification Race Race report Alessandro Nannini crashed his Benetton heavily in the morning warm-up session and was forced to start the race not only in the spare car but also wearing a neck brace due to a very sore neck. Prost got a jump on Senna at the start, but hit a bump in the straight, causing his wheels to spin and the engine to be cut momentarily by the rev limiter allowing Senna to pull ahead, but by the end of the first lap his lead was only 0.45 seconds. Nannini ran third followed by Nigel Mansell, Alex Caffi, Stefano Modena, Martin Brundle, Gerhard Berger, Andrea de Cesaris and Michele Alboreto. Nannini's neck could only take 10 laps of racing before he pulled into the pits to retire. He had been third until a spin on lap four dropped him to eighth and retired after not being able to hold his head up properly and complaining of dizziness. After 16 laps, Senna's lead over Prost was 4.25 seconds. He suddenly doubled that on the next lap when Prost's engine began overheating, forcing the Frenchman to back off for a few laps in a bid to get the water and oil temperatures back to normal.