Stosur pulled off the upset to defeat Halep. Stosur entered the match as the decided underdog, with a 26% chance to win before the match started.
From the outset, Stosur refused to go away, chipping away at Halep's lead until Stosur took their first lead at the end of the match. Halep never recovered after losing the lead, and by the time the match ended, Stosur had earned the upset.