Federer has never retired from a professional tennis match
Swiss tennis star Roger Federer, who is celebrating his 37th birthday today, has never retired from a professional tennis match in his career in which he holds a 1161-254 win-loss record. Federer was continuously ranked in the top ten from October 2002 to November 2016, having made his professional debut in 1998. Federer also has an Olympic doubles gold medal.