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.

Federer will have better idea about injury return in April/May

Roger Federer needs another knee surgery and will miss US Open

Federer to miss rest of season, including Olympics, US Open

Roger Federer - Wikipedia

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Federer needs 3rd surgery; has 'glimmer of hope' to return

Federer to undergo more knee surgeries, to miss US Open

Roger Federer injury: Swiss star announces third knee surgery

Tennis: Roger Federer needs knee surgery, to miss U.S. Open

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

Roger Federer faces 'many months' out as he prepares for further

Roger Federer, Overview, ATP Tour

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Why is Roger Federer not playing at Wimbledon this year? When does

Roger Federer to skip French Open, focus on grass, hard courts