The Canadian Grand Prix in Montreal was run in wet conditions and provided many retirements, but also a new winner. Senna was comfortably leading with only three laps to go when engine problems forced him to retire, handing Boutsen his first victory. Patrese came home second to make it a 1–2 finish for Williams, the first time a team other than McLaren had achieved this since Ferrari in Monza the previous year. Making up for his Phoenix indiscretion, Andrea de Cesaris picked up third for Dallara, the first ever podium finish for the small Italian team.