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Chung Hyeon (R) of South Korea and Novak Djokovic of Serbia greet each other after the men's singles fourth round match at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Chung Hyeon won by 3-0.(Xinhua/Bai Xuefei)
Chung Hyeon (R) of South Korea and Novak Djokovic of Serbia greet each other after the men's singles fourth round match at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Chung Hyeon won by 3-0.(Xinhua/Bai Xuefei)