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.