MONTREAL -- Alex Galchenyuk scored on a spin-around shot 3:40 into overtime to lift the Montreal Canadiens to a 3-2 victory over the Ottawa Senators in Game 2 of their NHL Eastern Conference playoff series on Friday night.

Montreal retained home-ice advantage by winning its first two home games of the best-of-seven series. Ottawa will try to do the same in Game 3 on Sunday and Game 4 on Wednesday at the Canadan Tire Centre.

Max Pacioretty and P.K. Subban scored for Montreal, which outshot the Senators 42-31. Carey Price made 29 saves.

Pacioretty scored in his first game back from a concussion after missing the opener and the final two regular-season games.

Pacioretty slams the glass after scoring

Montreal Canadiens' Max Pacioretty goes up against the glass as he celebrates his goal past Ottawa Senators goalie Andrew Hammond during second period of Game 2 NHL Stanley Cup first round playoff hockey action Friday, April 17, 2015 in Montreal. THE CANADIAN PRESS/Paul Chiasson

Clarke MacArthur and Patrick Wiercioch scored for Ottawa, while Mark Stone had a pair of assists despite limited mobility in his right wrist from a controversial slash from Subban in the series opener on Wednesday.

Goalie Andrew Hammond bounced back with a solid game after a shaky opener, but gave up a rebound that Galchenyuk cashed in for the winner.

The Senators came out hitting, throwing 21 checks in the first period alone, and got the lead.

Stone was in on the opening goal with a pass on a rush that saw MacArthur beat Price with a dipping shot from the slot at 18:42.

MacArthur reacts after scoring the first goal

Ottawa Senators left wing Clarke MacArthur (16) reacts after scoring the first goal on Montreal Canadiens goalie Carey Price (31) during first period of Game 2 NHL first round playoff hockey action Friday, April 17, 2015 in Montreal.THE CANADIAN PRESS/Ryan Remiorz

The Canadiens adjusted to the Senators forechecking and turned the tables in the second, outshooting Ottawa 14-3, and taking the lead.

Pacioretty was parked in front to take a pass from David Desharnais and beat Hammond with low shot between the pads on a power play at 7:18.

Subban, who escaped suspension for his slash on Stone, took a pass from Devante Smith-Pelly and blasted a rocket past Hammond at 16:30.

Subban celebrates rocket-launched goal

Montreal Canadiens' P.K. Subban celebrates after launching a rocket past Ottawa Senators goalie Andrew Hammond during second period of Game 2 NHL Stanley Cup first round playoff hockey action Friday, April 17, 2015 in Montreal. THE CANADIAN PRESS/Paul Chiasson

Markov kisses Subban

Montreal Canadiens defenceman P.K. Subban (76) gets a kiss from teammate Andrei Markov after scoring the second goal against the Ottawa Senators during second period of Game 2 NHL first round playoff hockey action Friday, April 17, 2015 in Montreal.THE CANADIAN PRESS/Ryan Remiorz

Stone made the pass again as Weircioch went to the net and got a shot between Price's pads on a power play at 13:25 of the third.

Notes -- Tough guy Chris Neil was on hand in case Stone couldn't play. . . Montreal's P.A. Parenteau sat out with an upper-body injury.