CHENGDU, CHINA - OCTOBER 02: Karen Khachanov of Russia serves during the singles final match against Albert Ramos-Vinolas of Spain on Day 7 of 2016 ATP Chengdu Open at Sichuan International Tennis Centre on October 2, 2016 in Chengdu, China. (Photo by Zhong Zhi/Getty Images)
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CHENGDU, CHINA - OCTOBER 02: Karen Khachanov of Russia returns a shot during the singles final match against Albert Ramos-Vinolas of Spain on Day 7 of 2016 ATP Chengdu Open at Sichuan International Tennis Centre on October 2, 2016 in Chengdu, China. (Photo by Zhong Zhi/Getty Images)
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