20-time major winner Roger Federer announces retirement

Federer's announcement comes just three months after he said he "definitely" planned to return to competition in 2023. While Williams will turn 41 in late September, Federer turned 41 in August.

The 20-time major victor has not competed since his quarterfinal loss at Wimbledon in 2021 and one month later, he underwent his third knee surgery in less than two years. Federer will team up with Rafael Nadal to play doubles at the Laver Cup from Sept. 23 to Sept. 25 in his final ATP event.

Nadal is the all-time leader in Grand Slam men's singles titles with 22, while Novak Djokovic has 21. Federer's 20 championships puts him in third, six ahead of American Pete Sampras, who retired in 2002.