NEW YORK -- Defending champion Aryna Sabalenka returned to the US Open semifinals without hitting a ball on Tuesday night because the woman she was supposed to face in the quarterfinals, 2023 Wimbledon champion Marketa Vondrousova , pulled out of their match with an injured knee.

"I tried my best to take the court today, but during the warm-up, I felt again my knee, and after consultation with the tournament doctor decided not to risk aggravating the injury," Vondrousova, a 26-year-old left-hander from the Czech Republic, said in a statement released by the United States Tennis Association. "I appreciate all the support this tournament and apologize to the fans who were looking forward to the match."

A representative for Vondrousova told ESPN's Mary Joe Fernandez the injury occurred

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