Kansas City Royals pulled off the upset to defeat Boston Red Sox. Kansas City Royals entered the game as the underdog, with a 43% chance to win before the game started.
From the outset, Kansas City Royals refused to go away, chipping away at Boston Red Sox's lead until Kansas City Royals took their first lead during the middle stretches of the game. Boston Red Sox never recovered after losing the lead, and by the time the game ended, Kansas City Royals had earned the upset.