Zack Kassian broke a 1-1 tie with a goal early in the third period and Eddie Lack preserved the lead with 13 of his 40 saves in the final period for the Vancouver Canucks in a 2-1 win over the struggling Boston Bruins on Tuesday night.

Daniel and Henrik Sedin both picked up assists on the tiebreaking goal 6:47 into the third as the Canucks beat the struggling Bruins for the second time this month.

Ryan Stanton had Vancouver’s other goal, beating Tuukka Rask on a slap shot 3:28 into the game to tie it at 1-1 and end a very brief lead for the Bruins.

Daniel Paille scored 1:05 into the game for Boston’s only goal despite getting 41 shots. The Bruins are 1-6-2 in their past nine, including a 5-2 loss at Vancouver on Feb. 13.

Rask finished with 26 saves.

There were two quick goals, then the goalies took over for the rest of the first period and all of the second. Lack faced three power plays in the second period, including one he created when he was called for tripping with 1:37 left. He stopped all 20 shots he faced in the period while Rask made 10 saves at the opposite end.

It was Lack’s first start since replacing Ryan Miller early in the second period on Sunday at the New York Islanders after the Vancouver starter was injured in a collision.

Kassian, who served Lack’s penalty, broke the deadlock on a slap shot 6:47 into the third, getting assists from both Sedin brothers as the twins continued to pile up points lately. Henrik has nine points in the past five games and Daniel has seven — all assists — during the five-game stretch.

Notes: Claude Julien coached his 600th game for the Bruins. … Lack was making his first career start against Boston. … The Bruins have lost three straight at home. … Vancouver was on the fourth of a five-game road trip, which wraps up Thursday at Buffalo.

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