Rich Peverley and Patrice Bergeron both had a goal and an assist, while Chris Kelly also lit the lamp for the Bruins, who have won six consecutive games against the Senators dating back to last season. Tim Thomas stopped 47 shots for the victors.
Jason Spezza and Daniel Alfredsson both had a goal and an assist for the Senators, who played without the league's top goal scorer, Milan Michalek. He suffered a concussion in Tuesday's 3-2 overtime win against the Buffalo Sabres.
Craig Anderson was tagged for all five goals on 29 shots. Ottawa has lost four of its last five contests.