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?Borna Coric of Croatia hits a return during the singles quarterfinal match against Andrey Rublev of Russia at the ATP Qatar Open in Doha, Qatar, on Jan. 4, 2018. Andrey Rublev won 2-0. (Xinhua/Nikku)
 
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?Borna Coric of Croatia hits a return during the singles quarterfinal match against Andrey Rublev of Russia at the ATP Qatar Open in Doha, Qatar, on Jan. 4, 2018. Andrey Rublev won 2-0. (Xinhua/Nikku)