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Chung Hyeon of South Korea hits a return during the men's singles third round match against Germany's Alexander Zverev at Australian Open 2018 in Melbourne, Australia, Jan. 20, 2018. Chung Hyeon won 3-2. (Xinhua/Li Peng)
Chung Hyeon of South Korea hits a return during the men's singles third round match against Germany's Alexander Zverev at Australian Open 2018 in Melbourne, Australia, Jan. 20, 2018. Chung Hyeon won 3-2. (Xinhua/Li Peng)