Washington Nationals pulled off the upset to defeat Boston Red Sox. Washington Nationals entered the game as the underdog, with a 37% chance to win before the game started.
From the outset, Washington Nationals refused to go away, chipping away at Boston Red Sox's lead until Washington Nationals 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, Washington Nationals had earned the upset.