Erik Karlsson scored twice, including 40 seconds into overtime, and the Ottawa Senators edged the Arizona Coyotes 3-2 on Thursday night for their fifth straight victory.
Karlsson tied it 2-2 when the star defenseman put in a rebound at 12:47 of the third period.
The Senators moved within two points of first-place Montreal in the Atlantic Division. Mike Condon had 39 saves.
Brendan Perlini and Lawson Crouse scored for Arizona. Mike Smith made 28 saves.
The Coyotes power play dropped to 3 of 39 over the past 13 games after an 0-for-4 night. Arizona has lost four of five.