The 1988 Portuguese Grand Prix was a Formula One motor race held on 25 September 1988 at the Autódromo do Estoril, Estoril. It was the thirteenth race of the 1988 Formula One World Championship. The 71-lap race was won by Alain Prost, driving a McLaren-Honda, with Ivan Capelli second in a March-Judd and Thierry Boutsen third in a Benetton-Ford. Prost's teammate and Drivers' Championship rival, Ayrton Senna, could only manage sixth. Qualifying McLaren gained their 9th front row of the year with Alain Prost in front of Ayrton Senna for the first time since France. Prost, whose MP4/4 had a brand new, stiffer chassis, set his fastest time early in Saturday qualifying, and then sat out the rest of the session, confident that Senna could not better the time. Senna indeed qualified second. They were ahead of Ivan Capelli in the atmospheric March-Judd, with Maurício Gugelmin in fifth behind the Ferrari of Monza winner Gerhard Berger. Both Capelli and Gugelmin expressed delight with their cars, especially in the fast corners. After finishing third and fourth in Italy, the Arrows-Megatrons of Derek Warwick (10th) and Eddie Cheever (18th) struggled in Portugal. Both drivers complained of little grip on the rarely used Estoril circuit, which was compounded by slow turns which exposed the Straight-4 Megatron engine's lack of throttle response. After missing the previous two races in Belgium and Italy due to illness, Nigel Mansell was back in his Williams-Judd. He complained of a sore neck but qualified 6th, less than 0.1 behind Gugelmin. Julian Bailey (Tyrrell-Ford), Stefano Modena (EuroBrun-Ford), and the Zakspeeds of Piercarlo Ghinzani and Bernd Schneider all failed to qualify while Oscar Larrauri (EuroBrun-Ford) failed to pre-qualify. Race The first start was aborted when the Rial-Ford of Andrea de Cesaris stalled on the grid. The second start was aborted after Derek Warwick stalled his Arrows A10 and was hit by de Cesaris, with Luis Pérez-Sala (Minardi) and Satoru Nakajima (Lotus). Ayrton Senna led off at the third start, to the delight of the Portuguese crowd. At the start of lap 2, Alain Prost pulled out of Senna's slipstream to pass him. Senna moved violently over on Prost and forced him towards the pit wall at over . The Frenchman nonetheless maintained his will to pass the Brazilian, not lifting off the throttle, and passed Senna into the first corner. Prost was not impressed with Senna's tactics and the pair