Mexican GP: Ayrton Senna, McLaren MP4-5 Honda, leads Alain Prost, McLaren MP4-5 Honda, Gerhard Berger, Ferrari 640, and Nigel Mansell, Ferrari 640.
Ayrton Senna, McLaren MP4-5 Honda, leads Alain Prost, McLaren MP4-5 Honda, Gerhard Berger, Ferrari 640, and Nigel Mansell, Ferrari 640.