Washington Capitals pulled off the upset to defeat Boston Bruins. Washington Capitals entered the game as the underdog, with a 42% chance to win before the game started.
From the outset, Washington Capitals refused to go away, chipping away at Boston Bruins's lead until Washington Capitals took their first lead during the middle stretches of the game. Boston Bruins never recovered after losing the lead, and by the time the game ended, Washington Capitals had earned the upset.