Roger Federer is going to miss the US Open and be sidelined for what he said will be "many months" because he needs a third operation on his right knee.
Federer announced the news Sunday via a video message on Instagram. He said he'll be "out of the game for many months."
Federer turned 40 on Aug. 8. He hasn't played a match since losing in the Wimbledon quarterfinals last month. The Swiss star then sat out the Tokyo Olympics, saying he had hurt his knee during the grass-court season.
Federer missed more than a year of action after first having his knee repaired shortly after the 2020 Australian Open in February of that year.