Rafael Nadal of Spain hits a return against Novak Djokovic of Serbia during the men's singles final at the China Open tennis tournament in Beijing on October 11, 2015. AFP PHOTO / WANG ZHAO (Photo credit should read WANG ZHAO/AFP via Getty Images)
Rafael Nadal of Spain hits a return against Novak Djokovic of Serbia during the men's singles final at the China Open tennis tournament in Beijing on October 11, 2015. AFP PHOTO / WANG ZHAO (Photo credit should read WANG ZHAO/AFP via Getty Images)