MONTREAL -- Right winger Brian Flynn scored a goal and added two assists to lead the Montreal Canadiens to a 4-3 win over the Ottawa Senators on Wednesday in Game 1 of their quarterfinal playoff series.

Goaltender Carey Price stopped 30 shots for the Canadiens. Netminder Andrew Hammond made 35 saves for the Senators.

Centers Torrey Mitchell, Tomas Plekanec and Lars Eller also scored for the Canadiens.

Left winger Milan Michalek and centers Kyle Turris and Mika Zibanejad replied for Ottawa.

The Senators benefited from a mistake by defenseman Andrei Markov to notch the first goal of the series. A shot from Michalek bounced off the end boards to

Price's right. Markov, right in front of his goalie, got his stick on the puck with the intention of pushing it over to Price to stop the play. But the Montreal netminder

was upright, and the puck went through his legs at 12:25 of the first period.

Mitchell brought the Bell Centre to life when he tied it at 7:53 of the second period. Hammond stopped Flynn's shot but was on his far right when Mitchell picked

up the rebound and tucked in the wraparound on the left side.

Plekanec gave Montreal its first lead of the night 15 seconds later on a 2-on-1 with right winger Brendan Gallagher. Left winger Alex Galchenyuk got defenseman

Erik Karlsson off his game with a hit, and the Senators captain missed the puck going by him, setting up the breakout and Plekanec's shot from the left circle.

A five-minute major to defenseman P.K. Subban -- after he slashed right winger Mark Stone -- allowed Ottawa to tie it on the power play at 10:36 shortly after a 5

-on-3 in their favor expired. Turris' shot from the left circle went in under the crossbar but came out so quickly, a review was required to confirm the goal.

Subban was also given a game misconduct. Stone went to the room but returned later in the frame.

Montreal regained its lead just over a minute later on the same Ottawa power play. Flynn, at the Senators' blue line, got the puck over to Eller, who broke in and

lifted the puck over Hammond.

Still on the power play, Zibanejad tied it at 12:36. Price saved defenseman Patrick Wiercioch's shot from the circle but the puck bounced out to the Senators

Winger, and he tossed it far side behind the Canadiens netminder.

Flynn made it 4-3 at 17:17. Left winger Brandon Prust took the rebound of defenseman Nathan Beaulieu's point shot and got it over to Flynn. The winger kicked

the puck up to his stick and skated around in front of Hammond before tucking it under the goalie's pad.

It marked just the third time Hammond has given up at least four goals in a game.

NOTES: Still recovering from an upper-body injury suffered April 5, Montreal LW Max Pacioretty missed Game 1 of the series but could be ready for Game 2. ... The Senators sported "MR" stickers on their helmets in honor of assistant coach Mark Reeds, who died of cancer earlier in the week. ... Canadiens D Tom Gilbert returned to the lineup after missing the last two games of the regular season. ... Ottawa scratched C Colin Greening, C Zack Smith, RW Chris Neil, LW Matt Puempel and D Jared Cowen. Montreal scratched C Manny Malhotra, D Mike Weaver, D Sergei Gonchar and D Greg Pateryn.