Spanish GP
Nigel Mansell, Williams FW11B Honda, leads Nelson Piquet, Williams FW11B Honda, Ayrton Senna, Lotus 99T Honda, Gerhard Berger, Ferrari F1-87, Michele Alboreto, Ferrari F1-87, Thierry Boutsen, Benetton B187 Ford, and Teo Fabi, Benetton B187 Ford.