Galchenyuk's OT goal gives Canadiens 3-2 win over Senators and 2-0 series lead

Montreal Canadiens defenseman P.K. Subban, center, celebrates with teammates Andrei Markov (79), Max Pacioretty (67), David Desharnais (51) and Devante Smith-Pelly (21) after scoring the second goal against the Ottawa Senators during the second period in Game 2 of an NHL hockey first-round playoff series, Friday, April 17, 2015 in Montreal. (Ryan Remiorz/The Canadian Press via AP) MANDATORY CREDIT (The Associated Press)

Montreal Canadiens' P.K. Subban celebrates his goal past Ottawa Senators goalie Andrew Hammond during the second period in Game 2 of an NHL hockey first-round playoff series, Friday, April 17, 2015 in Montreal. (Paul Chiasson/The Canadian Press via AP) MANDATORY CREDIT (The Associated Press)

MONTREAL – Alex Galchenyuk scored 3:40 into overtime, leading Montreal to a 3-2 victory over the Ottawa Senators on Friday night that gave the Canadiens a 2-0 lead in their first-round playoff series.

Max Pacioretty, back from a concussion, and P.K. Subban scored in regulation for the Canadiens, while David Desharnais picked up an assist on each.

Clarke MacArthur and Patrick Wiercioch scored for the Senators, and Mark Stone added two assists.

Pacioretty returned to the lineup for the Canadians after sitting out Game 1 with the head injury he suffered near the end of the regular season.

Carey Price stopped 29 shots for Montreal, while Ottawa's Andrew Hammond made 37 saves.

Game 3 is Sunday in Ottawa.