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