Joffrey Lupul's second goal of the game came 55 seconds into overtime to help the Toronto Maple Leafs defeat the Ottawa Senators at Canadian Tire Centre.
Shane Prince and Bobby Ryan scored for the Senators in the first period to give Ottawa a 2-0 lead. Erik Karlsson assisted on each.
Dion Phaneuf scored at 16:10 of the first period and TJ Brennan tied the game 2-2 at 5:47 of the second.
Karlsson's power-play goal at 11:53 of the second gave Ottawa a 3-2 lead before Lupul's goal 3:55 into the third period tied the game, 3-3. Lupul then scored in the first minute of overtime.
James Reimer started in goal for Toronto and made 21 saves on 24 shots; Garret Sparks entered the game in the third period and stopped all eight shots he faced.
Craig Anderson stopped 18 of 20 shots for the Senators; Matthew O'Connor made 15 saves on 17 shots.