Sep 15 (IANS) Roger Federer, a 20-time Grand Slam singles champion, on Thursday announced his retirement from top-level tennis, saying that Laver cup will be his final ATP tour event. The 41-year-old has not played since Wimbledon 2021, after which he had a third knee operation. “Laver cup next month will be my final ATP tour event. I will not play ...

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