LONDON, ENGLAND - NOVEMBER 19: Tomas Berdych of the Czech Republic in action during his men's singles match against Novak Djokovic of Serbia during day five of the Barclays ATP World Tour Finals at the O2 Arena on November 19, 2015 in London, England. (Photo by Yunus Kaymaz/Anadolu Agency/Getty Images)
Getty Images

Anadolu Agency Anadolu Agency