Isner pulled off the upset to defeat Raonic. Isner entered the match as the underdog, with a 42% chance to win before the match started.
From the outset, Isner refused to go away, chipping away at Raonic's lead until Isner took their first lead during the middle stretches of the match. Raonic never recovered after losing the lead, and by the time the match ended, Isner had earned the upset.