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