Serbia’s Novak Djokovic in action against Japan’s Kei Nishikori during their match at the ATP World Tour Finals in London, Britain, 15 November 2015. EPA/WILL OLIVER
Switzerland’s Roger Federer returns the ball to Tomas Berdych of Czech Republic during their match at the ATP World Tour Finals in London, Britain, 15 November 2015. EPA/WILL OLIVER
Tomas Berdych of Czech Republic enters the arena before his match against Switzerland’s Roger Federer during the ATP World Tour Finals in London, Britain, 15 November 2015. EPA/WILL OLIVER
Japan’s Kei Nishikori in action against Serbia’s Novak Djokovic during their match at the ATP World Tour Finals in London, Britain, 15 November 2015. EPA/WILL OLIVER
The O2 arena is illuminated in the French tricolor during the ATP World Tennis Finals in London, Britain, 15 November 2015. At least 129 people were killed in a series of terrorist attacks in Paris, France on 13 November 2015. EPA/WILL OLIVER
Switzerland’s Roger Federer returns the ball to Tomas Berdych of Czech Republic during their match at the ATP World Tour Finals in London, Britain, 15 November 2015. EPA/WILL OLIVER
Topics: 10sballs_com, Barclays ATP World Tour, Kei Nishikori, London tennis, Novak Djokovic, Roger Federer, Sports, Tennis, Tomas Berdych
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