Marchand, who also had two in Boston's shootout loss in Chicago on Sunday, has scored six in his past four games. Torey Krug had the other goal for the Bruins, who won at home for the 11th time in 13 games.
Boston's backup goaltender Chad Johnson made 21 saves.
Introducing the new official NHL App, available for iPhone, iPad and Android smartphones and tablets. A host of new features and improved functionality are available across all platforms, including a redesigned league-wide scoreboard, expanded news coverage, searchable video highlights, individual team experiences* and more. The new NHL App on your tablet also introduces new offerings such as 60fps video, Multitasking** and Picture-in-Picture.
*Available only for smartphones
** Available only for suported iPads