Chicago Cubs pulled off the upset to defeat Seattle Mariners. Chicago Cubs entered the game as the underdog, with a 41% chance to win before the game started.
From the outset, Chicago Cubs refused to go away, chipping away at Seattle Mariners's lead until Chicago Cubs took their first lead during the middle stretches of the game. Seattle Mariners did not go quietly, recapturing the lead for themselves, until Chicago Cubs regained control for good at the end of the game.