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LONDON, ENGLAND - NOVEMBER 20: (L-R) Fernando Verdasco of Spain, Juan Martin Del Potro of Argentina, Novak Djokovic of Serbia, Roger Federer of Switzerland, Rafael Nadal of Spain, Nikolay Davydenko of Russia, Andy Murray of Great Britain and Robin Soderling of Sweden line up for a photo during the Barclays ATP World Tour Finals - Media Day at the County Hall Marriot Hotel on November 20, 2009 in London, England. (Photo by Julian Finney/Getty Images)

LONDON, ENGLAND - NOVEMBER 20:  (L-R) Fernando Verdasco of Spain, Juan Martin Del Potro of Argentina, Novak Djokovic of Serbia, Roger Federer of Switzerland, Rafael Nadal of Spain, Nikolay Davydenko of Russia, Andy Murray of Great Britain and Robin Soderling of Sweden line up for a photo during the Barclays ATP World Tour Finals - Media Day at the County Hall Marriot Hotel on November 20, 2009 in London, England.  (Photo by Julian Finney/Getty Images)