CINCINNATI - AUGUST 19: Roger Federer of Switzerland celebrates defeating Jose Acasuso of Argentina during day three of the Western & Southern Financial Group Masters on August 19, 2009...

...Roger Federer of Switzerland hits a backhand during his Men's Singles Second Round match against Jose Acasuso of Argentina on day five of the French Open at Roland Garros on May 28, 2009...

Swiss player Roger Federer hits a return to Argentinian player Jose Acasuso during their French Open tennis second round match on May 28, 2009 at Roland Garros stadium...

Switzerland's Roger Federer returns the ball to Argentina's Jose Acasuso during their second round match at the Roland Garros stadium in Paris, Thursday May 28, 2009...

Switzerland's Roger Federer returns the ball to Argentina's Jose Acasuso during their second round match at the Roland Garros stadium in Paris, Thursday May 28, 2009...

...Roger Federer of Switzerland hits a backhand during his Men's Singles Second Round match against Jose Acasuso of Argentina on day five of the French Open at Roland Garros on May 28, 2009...

...player Roger Federer hits a return Swiss player Roger Federer hits a return to Argentinian player Jose Acasuso during their French Open tennis second round match on May 28, 2009 at Roland Garros stadium...