(121106) -- LONDON Nov. 6, 2012 (Xinhua) -- Jo-Wilfried Tsonga of France returns a shot during the men's singles Group A tennis match against Novak Djokovic of Serbia at the ATP World Tour Finals in the O2 Arena in London, Britain, Nov. 5, 2012. Djokovic won 2-0. (Xinhua/Wang Lili)
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