Switzerland's Roger Federer became the latest big name in tennis to withdraw from the Tokyo Olympics after the 20-time Grand Slam champion said on Tuesday that he had picked up a knee injury during the grass-court season.
Federer, who turns 40 next month, had two knee surgeries in 2020 which resulted in more than a year of rehabilitation, with the Swiss returning to action in March — 13 months after his Australian Open semifinal exit last year.
He withdrew from the French Open last month despite winning his third round match to save himself for the grass-court season, where he sought a record-extending ninth title at Wimbledon but was beaten in the quarterfinal by Hubert Hurkacz.