went back into the race only seconds in front of Senna who now had nearly a lap lead over his closest championship rival. Despite being on far fresher tyres than his teammate, Prost still lost ground to Senna and was eventually lapped when the Brazilian swept past on the main straight, fuelling Prost's claims that his engines were down on power compared to Senna's. McLaren team boss Ron Dennis later publicly apologised to Prost for the error in his pit stop. Both Ferraris ran well until Berger's race ended on lap 16 with transmission failure while Mansell's gearbox lasted until lap 43. This left the Williams of Patrese in second place with Alboreto a surprising third. This was how the top three finished with Alessandro Nannini fourth in his Benetton B188. The Benetton team had hoped to have their new B189 available in Mexico, but ongoing problems with the new Ford HB engine meant the team had to continue using their 1988 car and engines. Prost, having unlapped himself, finished fifth to be the last car on the lead lap, while Italian Gabriele Tarquini scored the final point for sixth in his AGS-Ford, which proved to be his only point in Formula One. Race classification Championship standings after the race Drivers' Championship standings Constructors' Championship standings Note: Only the top five positions are included for both sets of standings. References Mexican Grand Prix Mexican Grand Prix Grand Prix May 1989 sports events in Mexico