Portuguese GP
Alain Prost, McLaren MP4-2 TAG, leads the field off the line, ahead of Keke Rosberg, Williams FW09B Honda, Nelson Piquet, Brabham BT53 BMW, Ayrton Senna, Toleman TG184 Hart, and Nigel Mansell, Lotus 95T Renault. Further back is championship contender Niki Lauda, McLaren MP4-2 TAG.