NEW YORK :Defending champion Aryna Sabalenka received a walkover into the U.S. Open semi-finals after Marketa Vondrousova was forced to withdraw from their last eight showdown due to injury, organisers said on Tuesday.

Vondrousova, Wimbledon champion in 2023, had impressed in New York with upset victories over seventh seed Jasmine Paolini and ninth seed Elena Rybakina.

But injury again derailed the 26-year-old, who has endured long spells on the sidelines in recent seasons. She was one of three Czech women to reach the quarter-finals at Flushing Meadows.

Top seed Sabalenka will now face American Jessica Pegula in the semi-finals in a rematch of last year's final.

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