The world of professional tennis has come a long way since the beginning of its open era in the late sixties….only forty years ago. And, almost at the same...
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Shenay Perry hits a backhand in her match against Karolina Sprem of Croatia during the BNP Paribas Open at the Indian Wells Tennis Garden on March 11, 2010 in Indian Wells
Roger Federer of Switzerland wipes her face while playing against Andy Roddick during day ten of the Sony Ericsson Open at the Crandon Park Tennis Center on April 1, 2009 in Key Biscayne, Florida
Maria Sharapova of Russia returns a shot against Christina McHale during day four of the 2009 U.S. Open at the USTA Billie Jean King National Tennis Center on September 3, 2009
Swiss tennis player Roger Federer gestures as he celebrates after victory in his men\'s singles final match against British opponent Andy Murray at the Australian Open
Rafael Nadal of Spain plays a forehand in a practice session during the Exxon Mobil Qatar Open Tennis on January 6, 2009 in Doha, Qatar
Andy Roddick (R) and actor Will Forte shake hands during Arthur Ashe Kid's Day at the 2009 U.S. Open at the Billie Jean King National Tennis Center on August 29, 2009
