Canadian GP
Alessandro Nannini, Benetton B188 Ford, leads Nelson Piquet, Lotus 100T Honda, Thierry Boutsen, Benetton B188 Ford, Eddie Cheever, Arrows A10B Megatron, Nigel Mansell, Williams FW12 Judd, Philippe Streiff, AGS JH23 Ford, and Riccardo Patrese, Williams FW12 Judd, at the start.