Serbia's Djokovic celebrates defeating France's Tsonga during their singles tennis match at the ATP World Tour Finals in the O2 Arena in London

 
Serbia
Serbia's Novak Djokovic celebrates defeating France's Jo-Wilfried Tsonga during their singles tennis match at the ATP World Tour Finals in the O2 Arena in London November 5, 2012. REUTERS/Kieran Doherty
Tags: london , WORLD