MONTREAL -- Dale Weise had a penalty shot goal and an assist as the Montreal Canadiens downed the rival Boston Bruins 5-1 for their fourth straight win on Thursday night.

Max Pacioretty, with two, Lars Eller and Jiri Sekac also scored for Montreal (12-4-1), which saw Sergei Gonchar's debut after he was acquired Tuesday in a trade with Dallas.

Dougie Hamilton scored a power play goal for Boston (10-8-0), which lost badly for a second game in a row after a 6-1 pasting in Toronto on Wednesday night. The Bruins were playing a third game in four nights.

With Tuukka Rask pulled after allowing four goals on 16 shots in Toronto, Niklas Svedberg got the start for Boston and faced 34 shots. Carey Price made 21 saves for Montreal.

The Bruins came out of the first period with a 1-0 lead on Hamilton's point from Patrice Bergeron's faceoff win only four seconds into a man advantage at 16:04.

Fatigue started to show in the second as Boston took three straight penalties.

The first was a penalty shot at 2:31, as Dennis Seidenberg lost the puck and then tripped Weise. The Canadiens fourth liner beat Svedberg between the pads.

Confusion behind the Boston net let Brendan Gallagher poke a pass in front for Eller to score his third goal in three games at the 13:00 mark. Pacioretty added one on the rush at 14:57 on a one-timer of a feed from Weise.

Pacioretty was at the doorstep to get a stick on a David Desharnais pass that deflected off Hamilton's skate 5:09 into the third.

Sekac took a Nathan Beaulieu feed and went in alone on the left side to score on a wrist shot on a power play at 14:06. The goal ended a 0-for-27 run without a power play goal for Montreal. It was only their fourth this season and three have come against Boston.

Gonchar had the Montreal power play looking livelier all night, although he wasn't involved in the goal.

Notes -- With Gonchar in, Montreal dressed seven defencemen, with Beaulieu taking some shifts on left wing on the fourth line. Gonchar played on the first power-play unit with Andrei Markov. . . The Bruins were missing injured captain Zdeno Chara and first line centre David Krejci. . .Boston's Matt Fraser was knocked wobbly from a punch by Beaulieu during a second-period fight, but he was back for the third. . . The teams meet again Nov. 22 in Boston.