New York, Sept. 3 -- Aryna Sabalenka advanced to the semifinals of the US Open on Wednesday via a walkover as 2023 Wimbledon champion Marketa Vondrousova withdrew ahead of her quarterfinal fixture against Sabalenka, citing a knee injury.

Sabalenka is set to face Jessica Pegula in the semis, a rematch of last year's final.

"I am sorry to announce that I have to withdraw from my quarterfinal match this evening due to a knee injury. I tried my best to take the court today, but during the warm-up, I felt pain in my knee, and after consultation with the tournament doctor, I decided not to risk aggravating the injury. I appreciate all the support for this tournament and apologise to the fans who were looking forward to the match. I had an ama...