Colorado Rockies pulled off the upset to defeat Chicago Cubs. Colorado Rockies entered the game as the underdog, with a 36% chance to win before the game started.
From the outset, Colorado Rockies refused to go away, chipping away at Chicago Cubs's lead until Colorado Rockies took their first lead during the middle stretches of the game. Chicago Cubs never recovered after losing the lead, and by the time the game ended, Colorado Rockies had earned the upset.