Arizona Diamondbacks pulled off the upset to defeat Pittsburgh Pirates. Arizona Diamondbacks entered the game as the underdog, with a 40% chance to win before the game started.
From the outset, Arizona Diamondbacks refused to go away, chipping away at Pittsburgh Pirates's lead until Arizona Diamondbacks took their first lead during the middle stretches of the game. Pittsburgh Pirates never recovered after losing the lead, and by the time the game ended, Arizona Diamondbacks had earned the upset.