BUFFALO, N.Y. — Ivan Provorov scored 42 seconds into overtime, and the Philadelphia Flyers overcame a three-goal deficit to pull out a 4-3 win and extend the Buffalo Sabres winless skid to 18 on Monday night.

The Flyers scored three times in the third period to overcome a 3-0 deficit, with Sean Couturier forcing overtime by tipping in Provorov’s point shot with 1:29 left, and Philadelphia’s net empty for an extra attacker.

Provorov then scored by converting Couturier’s pass on a 2-on-1 break and slipping a shot under goalie Linus Ullmark’s pads after Buffalo’s Rasmus Dahlin turned the puck over in the Philadelphia end.