(121108) -- LONDON, Nov. 8, 2012 (Xinhua) -- Jelena Ristic, girlfriend of Novak Djokovic of Serbia, watches the men's singles match between Novak Kjokovic and Andy Murray of Britain at the ATP World Tour Finals in the O2 Arena in London, Britain, on Nov. 7, 2012. Djokovic won 2-1. (Xinhua/Wang Lili)
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