Boyle and Logan Couture both had a goal and an assist, and Marleau pushed San Jose's lead to 3-1. Antti Niemi made 28 saves for the Sharks, who were outshot 30-28.
Kevin Bieksa scored for the Canucks before a disappointed white-towel-waving sellout crowd. The loss spoiled a strong effort from goalie Roberto Luongo, who earned the start after Cory Schneider didn't recover in time from an undisclosed injury.
The Canucks were the first home team to lose in the first six games of this year's playoffs.
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