LONDON, ENGLAND - NOVEMBER 21: (L-R) Andy Murray of Great Britain, Novak Djokovic of Siberia, Roger Federer of Switzerland and Rafael Nadal of Spain attend a ceremony for Carlos Moya's retirement during the Barclays ATP World Tour Finals at O2 Arena on November 21, 2010 in London, England. (Photo by Clive Brunskill/Getty Images)
