(FILE PHOTO) Rafael Nadal,Grand Slam champion, will retire from tennis at the end of this season. PARIS - MAY 31: Defeated champion Rafael Nadal of Spain waves to the crowd as he walks off court following his defeat during the Men's Singles Fourth Round match against Robin Soderling of Sweden on day eight of the French Open at Roland Garros on May 31, 2009 in Paris, France. (Photo by Clive Brunskill/Getty Images)