Roger Federer: After several knee surgeries, Roger Federer announced  

After several knee surgeries, Roger Federer announced his retirement from competitive tennis at

the age of 41. During his career, he won 20 Grand Slam titles, spent five seasons ranked No. 1,

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and together with rivals Rafael Nadal and Novak Djokovic, helped to establish a golden era of

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men's tennis. Federer wrote on his social media platforms on Thursday, "As many of you know, the

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previous three years have given me with hardships in the shape of injuries and operations." "I've

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put in a lot of effort to be back in top competitive shape. The message my body has been sending

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me lately is clear, but I am also aware of its potential and limitations. "I'm a 41-year-old man. In

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the past 24 years, I have participated in almost 1500 matches. Tennis has been more generous

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to me than I could have ever imagined, but now I have to decide whether to call it quits on my

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competitive career." Only contemporary players Nadal (22) and Djokovic have more Grand Slam victories (20) than Federer (21).

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