Chicago Blackhawks pulled off the upset to defeat St. Louis Blues. Chicago Blackhawks entered the game as the underdog, with a 43% chance to win before the game started.
From the outset, Chicago Blackhawks refused to go away, chipping away at St. Louis Blues's lead until Chicago Blackhawks took their first lead at the end of the game. St. Louis Blues never recovered after losing the lead, and by the time the game ended, Chicago Blackhawks had earned the upset.