China Open 2016 Tennis Tournament Quarter Finals [Getty Images]

BEIJING, CHINA - OCTOBER 07: Grigor Dimitrov of Bulgaria in action against Rafael Nadal of Spain (not seen) during the Men's quarter final match of China Open 2016 Tennis Tournament in Beijing, China on October 07, 2016.

(Photo by Zhong Zhenbin/Anadolu Agency/Getty Images)

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