Dougie Hamilton also scored for Boston. The Bruins are 6-2 overall and have won their first four road games for the first time since 2010.
Nikita Zadorov and Cody Hodgson scored for Buffalo. At 1-9-1, the Sabres are off to their worst start in franchise history. They are winless in their first seven home games.
Boston left wing Loui Eriksson had to be helped from the ice after a late hit from Sabres enforcer John Scott in the third period. Scott then fought Adam McQuaid and was given a match penalty.
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