Roger Federer needs another knee surgery and will miss U.S. Open

Roger Federer will undergo additional surgery on his right knee, leaving him unable to compete at the 2021 U.S. Open.

Roger Federer will miss US Open after announcing further knee

Federer to miss Rio games to recover from knee surgery

Roger Federer says he is out for Olympics, done for year – The

Roger Federer to miss French Open after knee surgery

Novak Djokovic says Roger Federer will be missed after his recent

Roger Federer Out of U.S. Open After Knee Setback - WSJ

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Federer to miss US Open and 'many months' with plans to undergo

Roger Federer Eyes Wimbledon After Knee Surgery