only 2/10ths from the pole. In fact, the nature of the circuit saw atmo cars line up from 3rd to 7th on the grid. The next best turbo behind the McLarens being the Ferrari of Gerhard Berger in 8th place, though the Austrian was only 1.399 slower than Senna with Nelson Piquet (Lotus-Honda) and Michele Alboreto qualifying in 10th and 11th places. The Arrows cars struggled with Derek Warwick qualifying 17th and Eddie Cheever just scrambling onto the back row of the grid in 25th. The Arrows were in fact slower than Nicola Larini's Osella which qualified 14th. The two Zakspeeds of Piercarlo Ghinzani and Bernd Schneider failed to qualify, as did Bailey and Oscar Larrauri in the EuroBrun. Gabriele Tarquini failed to pre-qualify his Coloni. Race summary From the 10th all-McLaren front row of the year, Alain Prost made a good start, with the Williams of Nigel Mansell drafting past Ayrton Senna into 2nd. Ivan Capelli and Thierry Boutsen tangled, damaging the Benetton's nosecone. On lap 2, Senna passed Mansell but ran wide, allowing the Englishman to retake the lead. On lap 16, Michele Alboreto retired with engine problems on his Ferrari. For the first 28 laps there was no change amongst the top seven: Prost led Mansell by half a second, while Senna had to defend third place from Riccardo Patrese and Capelli, who in turn was being challenged by Alessandro Nannini and Gerhard Berger. Around lap 30, Nannini, Berger and Piquet all pitted for new tyres. After trailing the Williams for the first hour of the race, and doing so without a clutch since the early laps, Capelli managed to pass Patrese for fourth on lap 36 and then Senna for third on lap 39. However, his engine failed on lap 46. Mansell managed to keep Prost within arms length, but with a less powerful engine on the tight Jerez circuit, could not get past, or close enough, to the Frenchman. On lap 47 Mansell pitted but a sticking wheel nut delayed him and enabled Prost to pull ahead. Meanwhile, Nannini was going fast on his new tyres, passing both Patrese and Senna in one lap. Mansell's slow stop allowed Prost to pit on lap 50 without losing his lead (though he accidentally selected second gear and was slow getting away from his pit), and a lap later Senna also pitted for new tyres and dropped out