MONTREAL - Mark Stone and Erik Karlsson scored 2:24 apart in the third period, helping Ottawa Senators rally to beat the Montreal Canadiens 4-3 on Tuesday night.
Stone tied it at 3 early in the third from the slot after three Canadiens players got caught behind their own net.
Karlsson then scored at 5:37, the visitors' first lead of the evening, on a fluke no-look shot from the blue line after a bad giveaway by Jeff Petry.
Mike Hoffman and Derick Brassard also scored and Craig Anderson made 36 saves for Ottawa.
Shea Weber, Alexander Radulov and Alex Galchenyuk scored for Montreal. Andrei Markov had three assists, and Carey Price stopped 19 of 23 shots.
The Sens scored more than two goals in regulation for the first time in 12 matches.
Montreal played with five defensemen in the third after Nathan Beaulieu left at the end of the second. Beaulieu took a shot from Brassard to his neck and went straight to the dressing room.
The Canadiens later confirmed Beaulieu was taken to the hospital for precautionary reasons.
With Beaulieu's absence came extended ice times for Weber and Markov, Montreal's veteran blue liners.
After a sloppy first period by both teams, the goals came in quick succession in the second.
Weber got the Habs on the board 56 seconds into the period on the power play. Hoffman took a penalty late in the first period for closing his hand on the puck, and Weber made him pay after the intermission with a thunderous slap shot from the point.
Seven of Weber's eight goals this season have been scored with the man advantage. Weber also has seven of Montreal's 15 power-play goals.
Hoffman got his redemption five minutes later. With Ottawa on the power play, the wing beat Price above the shoulder from an extremely tight angle to make it 1-1.
The Canadiens regained the lead at 7:29 when Radulov scored after an impressive effort. The Russian dangled around Hoffman along the boards, cut to the net, shot on Anderson once then scored on his own rebound while falling to the ice.
Brassard tied things 2-2 late in the second before Galchenyuk answered back at 2:08 of the third.
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