Roger Federer announced that he underwent right knee surgery in Switzerland on Wednesday.
Federer tweeted that he will miss the French Open as well as the Miami Open and Indian Wells. He expects to be "back playing soon," when the grass portion of the ATP season begins.
"My right knee has been bothering me for a little while," Federer tweeted on Thursday morning. "I hoped it would go away, but after an examination, and discussion with my team, I decided to have arthroscopic surgery in Switzerland. ...As a result, I will unfortunately have to miss Dubai, Indian Wells, Bogota, Miami and the French Open.