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Daniil Medvedev of Russia hits a return during the final match against Borna Coric of Croatia at St. Petersburg Open ATP tennis tour in St. Petersburg, Russia, Sept. 22, 2019. (Xinhua/Irina Motina)
Daniil Medvedev of Russia hits a return during the final match against Borna Coric of Croatia at St. Petersburg Open ATP tennis tour in St. Petersburg, Russia, Sept. 22, 2019. (Xinhua/Irina Motina)