BOSTON — David Pastrnak had his fourth hat trick of the season and the Boston Bruins rolled to their third straight win over the Montreal Canadiens, 4-1. 

Boston has won seven of its last eight and took the season series with rival Montreal 3-1. The Bruins outscored the Canadiens 15-3 over the final three meetings. 

Montreal has lost two straight as it tries to stay in the hunt for the playoffs. 

Patrice Bergeron added an empty-net goal and Tuukka Rask had 28 saves for the Bruins to improve to 13-0-6 at home this season. 

Marco Scandella scored Montreal's lone goal.