![Beijing, China. 7th Oct, 2015. Rafael Nadal of Spain returns the ball during the men's singles second round match of China Open Tennis Tournament against Vasek Pospisil of Canada at the National Beijing, China. 7th Oct, 2015. Rafael Nadal of Spain returns the ball during the men's singles second round match of China Open Tennis Tournament against Vasek Pospisil of Canada at the National](https://c8.alamy.com/comp/F3H1XD/beijing-china-7th-oct-2015-rafael-nadal-of-spain-returns-the-ball-F3H1XD.jpg)
Beijing, China. 7th Oct, 2015. Rafael Nadal of Spain returns the ball during the men's singles second round match of China Open Tennis Tournament against Vasek Pospisil of Canada at the National
![Beijing, China. 6th Oct, 2015. Novak Djokovic of Serbia celebrates during the men's singles first round match of China Open Tennis Tournament against Simone Bolelli of Italy at the National Tennis Center Beijing, China. 6th Oct, 2015. Novak Djokovic of Serbia celebrates during the men's singles first round match of China Open Tennis Tournament against Simone Bolelli of Italy at the National Tennis Center](https://c8.alamy.com/comp/F3E2DK/beijing-china-6th-oct-2015-novak-djokovic-of-serbia-celebrates-during-F3E2DK.jpg)
Beijing, China. 6th Oct, 2015. Novak Djokovic of Serbia celebrates during the men's singles first round match of China Open Tennis Tournament against Simone Bolelli of Italy at the National Tennis Center
![151008) -- BEIJING, Oct. 8, 2015 (Xinhua) -- Novak Djokovic (L) of Serbia and his younger brother and teammate Djordje Djokovic play against Jack Sock of the United States and Vasek Pospisil 151008) -- BEIJING, Oct. 8, 2015 (Xinhua) -- Novak Djokovic (L) of Serbia and his younger brother and teammate Djordje Djokovic play against Jack Sock of the United States and Vasek Pospisil](https://c8.alamy.com/comp/F3JJMK/151008-beijing-oct-8-2015-xinhua-novak-djokovic-l-of-serbia-and-his-F3JJMK.jpg)