MONTREAL -- Left winger Alex Galchenyuk scored at 3:40 of the first overtime to give the Montreal Canadiens a 3-2 win over the Ottawa Senators on Friday night at the Bell Centre.

The victory put Montreal up 2-0 in their Eastern Conference quarterfinal series.

Goaltender Carey Price made 29 saves for Montreal while Andrew Hammond stopped 37 shots for the Senators.

Left winger Max Pacioretty and defenseman P.K. Subban scored in regulation for the Canadiens. Left winger Clarke MacArthur and defenseman Patrick Wiercioch provided the goals for Ottawa.

For the second straight game, it was Ottawa striking first. Right winger Mark Stone fed MacArthur in the neutral zone and the Senators winger skated to the bottom of the left circle before firing a wrist shot over Price at 18:42 of the first period.

It marked the fifth time in seven playoff meetings against the Canadiens that Ottawa has scored first.

Pacioretty evened things up at 7:18 of the second period on the power play. After a strong cycling session in the Senators' end, defenseman Andrei Markov, at the point, dished off to center David Desharnais in the left circle. Through traffic, Desharnais sent a perfect pass to Pacioretty in the right circle and the Canadiens' sniper slid it five-hole on Hammond.

Subban put Montreal ahead 2-1 at 16:30 of the second period with his patented slap shot. After Desharnais won a battle along the boards, right winger Devante Smith-Pelly picked up the puck at the bottom of the left circle and sent it over to Subban, all alone at the bottom of the right circle. Subban wasted little time and fired a shot that beat Hammond, top shelf.

Wiercioch tied the game on the power play at 13:25 of the third period. Price stopped a dump-in by Senators defenseman Erik Karlsson but the loose puck went out to Stone in the corner. Stone fed an incoming Wiercioch and the Ottawa blueliner skated in close on Price, beating him between the legs.

NOTES: Canadiens LW Max Pacioretty returned to the lineup after missing the team's previous three games with an upper-body injury. ... Montreal RW P.A. Parenteau missed the game and remains day-to-day with an upper-body injury. ... Ottawa RW Mark Stone, injured after getting slashed by Montreal D P.K. Subban in Game 1, was in the lineup for Game 2. ... The Canadiens scratched C Manny Malhotra, D Greg Pateryn, D Sergei Gonchar and D Mike Weaver. ... The Senators scratched RW Chris Neil, C Zack Smith, C Colin Greening, LW Matt Puempel and D Jared Cowen. ... D Andrei Markov suited up for his 73rd career playoff game with Montreal, moving him into sole possession of 53rd on the team's all-time list.