Joel Ward slammed home a rebound at the 2 minutes, 57 seconds of overtime to give the Capitals a 2-1 victory over the host Boston Bruins on Wednesday night as Washington advanced to the second round of the playoffs and ended the defending Stanley Cup champions' hopes of a repeat.
Rookie Braden Holtby stopped 31 shots for Washington in Game 7 - the seventh one-goal game of the series.
It was the first time in NHL history that a playoff series had seven games determined by one goal. Four of the games went into overtime.
Nashville's Pekka Rinne, Los Angeles' Jonathan Quick, and the Rangers' Henrik Lundqvist were named finalists for the Vezina Trophy.