Spanish GP: Ayrton Senna, Lotus 99T Honda, leads Thierry Boutsen, Benetton B187 Ford, Alain Prost, McLaren MP4-3 TAG, and Nelson Piquet, Williams FW11B Honda.
Ayrton Senna, Lotus 99T Honda, leads Thierry Boutsen, Benetton B187 Ford, Alain Prost, McLaren MP4-3 TAG, and Nelson Piquet, Williams FW11B Honda.