Canadian GP: Nelson Piquet, Williams FW11 Honda, leads Ayrton Senna, Lotus 98T Renault, René Arnoux, Ligier JS27 Renault, and Gerhard Berger, Benetton B186 BMW.
Nelson Piquet, Williams FW11 Honda, leads Ayrton Senna, Lotus 98T Renault, René Arnoux, Ligier JS27 Renault, and Gerhard Berger, Benetton B186 BMW.