...BASEL, SWITZERLAND - APRIL 11: Roger Federer and Mirka Vavrinec embrace after their wedding on April 11, 2009 in Basel, Switzerland. (Photo by...

Spain's Rafael Nadal, left, hugs Switzerland's Roger Federer during the awarding ceremony after winning the Men's singles final match at the Australian Open...

LONDON, ENGLAND - NOVEMBER 25: Roger Federer of Switzerland poses with the ATP World Tour Champion Trophy during the Barclays ATP World Tour...

Spain's Rafael Nadal left, shakes the hand of Switzerland's Roger Federer after winning the men's final on the Centre Court at Wimbledon, Sunday July 6 , 2008...

LONDON, ENGLAND - NOVEMBER 28: Roger Federer of Switzerland reacts during the men's singles semi final match against Nikolay Davydenko of Russia...

Switzerland's Roger Federer cries as he looks down at the Men's singles trophy after losing in the final...

Nikolay Davydenko of Russia celebrates after beating Roger Federer of Switzerland 6-2 4-6 7-5 in a singles semi-final match during the...

1- LONDON, ENGLAND - NOVEMBER 26: Roger Federer of Switzerland returns the ball during the men's singles round robin match against Juan Martin...

...semi-final after he won his match during the men's singles round robin match against Roger Federer of Switzerland during the Barclays ATP World Tour Finals at the O2 Arena on November 26...

Juan Martin Del Potro of Argentina plays the ball through his legs against Roger Federer of Switzerland in a Singles match during the Barclays ATP World Tour Tennis Finals in London...

LONDON, ENGLAND - NOVEMBER 24: Roger Federer of Switzerland serves the ball during the men's singles second round match against Andy Murray...

Andy Murray, left, from Great Britain, shakes hands with Roger Federer, from Switzerland, after Murray upset No. 1 seed Federer, 7-5, 6-4, in a second...

Roger Federer of Switzerland plays against Fernando Verdasco of Spain in a Singles match during the Barclays ATP...

Roger Federer speaks during a press conference at the Davidoff Swiss Indoors tennis tournament in Basel, Switzerland, Sunday...

Roger Federer, of Switzerland, returns the ball to Julien Benneteau, of France, during the BNP Masters indoor tennis...