Ville Leino scored 4:43 into overtime as the Philadelphia Flyers forced a pivotal Game 7 in their Eastern Conference quarterfinal series with a 5-4 road triumph over the Buffalo Sabres on Sunday.

Former Sabres captain Daniel Briere tallied twice and has five goals in the series. James van Riemsdyk and Scott Hartnell also scored and All-Star Claude Giroux notched a pair of assists for Atlantic Division champion Philadelphia, which will host Game 7 on Tuesday.

Michael Leighton made the start and permitted three goals on eight shots before being replaced by Brian Boucher, who stopped 24 of 25 shots.

In overtime, Kris Versteeg's shot from the high slot handcuffed Ryan Miller. The rebound fell at the doorstep and Leino alertly tapped it in to extend the series.

Thomas Vanek netted a pair of power-play goals, Rob Niedermayer and Nathan Gerbe also scored and defenseman Tyler Myers notched three assists for seventh-seeded Buffalo.

Miller turned aside 43 shots in the loss for the Sabres.

Veteran defenseman Chris Pronger returned after a 21-game absence with a broken hand and played just over 4 1/2 minutes.