S Peng pulled off a surprising upset to defeat A Radwanska. S Peng entered the match as the decided underdog, with a 15% chance to win before the match started.
From the outset, S Peng refused to go away, chipping away at A Radwanska's lead until S Peng took their first lead during the middle stretches of the match. A Radwanska never recovered after losing the lead, and by the time the match ended, S Peng had earned the upset.