Canadian GP: Nigel Mansell, Williams FW11 Honda, leads Ayrton Senna, Lotus 98T Renault, Nelson Piquet, Williams FW11 Honda, Alain Prost, McLaren MP4-2C TAG, René Arnoux, Ligier JS27 Renault, Keke Rosberg, McLaren MP4-2C TAG, Gerhard Berger, Benetton B186 BMW, Riccardo Patrese, Brabham BT55 BMW, Jacques Laffite, Ligier JS27 Renault.
Nigel Mansell, Williams FW11 Honda, leads Ayrton Senna, Lotus 98T Renault, Nelson Piquet, Williams FW11 Honda, Alain Prost, McLaren MP4-2C TAG, René Arnoux, Ligier JS27 Renault, Keke Rosberg, McLaren MP4-2C TAG, Gerhard Berger, Benetton B186 BMW, Riccardo Patrese, Brabham BT55 BMW, Jacques Laffite, Ligier JS27 Renault.