Johnny Boychuk scored the tiebreaking goal with 6:06 left in the third period, Milan Lucic had two goals and the Boston Bruins clinched the Eastern Conference's best record with a 5-2 win over the Philadelphia Flyers on Saturday afternoon.
David Krejci also scored for the Bruins and Patrice Bergeron extended his consecutive point streak to 11 games, setting up Boychuk's go-ahead score.
Wayne Simmonds and Jay Rosehill scored for the Flyers, who are in a tight race with a group of teams for a playoff spot.
Tuukka Rask stopped 24 shots for the Bruins, who had lost their past two games.
Ray Emery made 37 saves for the Flyers. Philadelphia has lost three straight.