Pittsburgh Penguins pulled off the upset to defeat Washington Capitals. Pittsburgh Penguins entered the game as the underdog, with a 44% chance to win before the game started.
From the outset, Pittsburgh Penguins refused to go away, chipping away at Washington Capitals's lead until Pittsburgh Penguins took their first lead during the middle stretches of the game. Washington Capitals never recovered after losing the lead, and by the time the game ended, Pittsburgh Penguins had earned the upset.