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Chung Hyeon of South Korea competes during the men's singles quarterfinal against Tennys Sandgren of the United States at Australian Open 2018 in Melbourne, Australia, Jan. 24, 2018. Chung Hyeon won 3-0. (Xinhua/Li Peng)
Chung Hyeon of South Korea competes during the men's singles quarterfinal against Tennys Sandgren of the United States at Australian Open 2018 in Melbourne, Australia, Jan. 24, 2018. Chung Hyeon won 3-0. (Xinhua/Li Peng)