come into contention as rain began on parts of the circuit, benefiting Senna. On lap 16 Capelli seized his chance to pass Prost for the lead, the first time a non-turbo car had led a Grand Prix since . Prost had been slowed when Suzuki's Lola had spun at the chicane and got going again just as Prost and Capelli were braking for the tight right-left complex. He then missed a gear coming out of the chicane thanks to a troublesome gearbox and was passed by the March, but Capelli's lead only lasted for a few hundred metres as the extra power of the Honda turbo engine allowed Prost to regain the lead going into the first turn. Capelli made several further attempts to overtake Prost before ultimately retiring three laps later with electrical failure. Mansell's race lasted until lap 24 when he collided with Piquet's Lotus while trying to lap him. Piquet, still unwell with a virus and complaining of double vision, continued for another ten laps before retiring through fatigue. By then Senna was catching Prost rapidly, and with traffic, Prost's malfunctioning gearbox, and a tricky wet and dry surface, conditions were favourable to the Brazilian. On lap 27, as they attempted to lap Andrea de Cesaris, Nakajima and Maurício Gugelmin, Senna managed to force his way through as Prost was delayed by de Cesaris's Rial. Senna then put in a succession of fast laps, breaking the former lap record and building a lead of over three seconds, despite being delayed while lapping Nakajima. With slick tyres on a track that was now wet, Senna gestured for the race to be stopped. The race ran out its entire distance, however, with Senna finishing 13 seconds ahead of Prost. Boutsen took third place, whilst Berger recovered to fourth place after Alboreto held up Nannini, who had to settle for fifth. Patrese finished in sixth, and Nakajima was 7th. With victory in the race, Senna clinched the World Championship. Due to the scoring system in 1988, Prost could only add three more points to his total even if he won in Australia, which would give him 87 points in total. If Senna then failed to score they would be equal on points, but Senna would still win the title, having taken more wins (8 to 7). Victory in Japan was also Senna's eighth win of the season, which beat the