New York Islanders pulled off the upset to defeat Pittsburgh Penguins. New York Islanders entered the game as the underdog, with a 40% chance to win before the game started.
From the outset, New York Islanders refused to go away, chipping away at Pittsburgh Penguins's lead until New York Islanders took their first lead toward the end of the game. Pittsburgh Penguins never recovered after losing the lead, and by the time the game ended, New York Islanders had earned the upset.