J Sock pulled off a surprising upset to defeat Ma Cilic. J Sock entered the match as the decided underdog, with a 24% chance to win before the match started.
From the outset, J Sock refused to go away, chipping away at Ma Cilic's lead until J Sock took their first lead during the middle stretches of the match. Ma Cilic never recovered after losing the lead, and by the time the match ended, J Sock had earned the upset.