Arizona Cardinals pulled off the upset to defeat Pittsburgh Steelers. Arizona Cardinals entered the game as the decided underdog, with a 28% chance to win before the game started.
From the outset, Arizona Cardinals refused to go away, chipping away at Pittsburgh Steelers's lead until Arizona Cardinals took their first lead during the middle stretches of the game. Pittsburgh Steelers never recovered after losing the lead, and by the time the game ended, Arizona Cardinals had earned the upset.