SHANGHAI, CHINA - OCTOBER 09: Hyeon Chung of Korea returns a shot to Hubert Hurkacz of Poland during the First Round match at Qi Zhong Tennis Centre on October 9, 2018 in Shanghai, China. (Photo by Kevin Lee/Getty Images)
SHANGHAI, CHINA - OCTOBER 09: Hyeon Chung of Korea returns a shot to Hubert Hurkacz of Poland during the First Round match at Qi Zhong Tennis Centre on October 9, 2018 in Shanghai, China. (Photo by Kevin Lee/Getty Images)