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Novak Djokovic of Serbia reacts during the men's singles fourth round match against Chung Hyeon of South Korea at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Djokovic lost by 0-3. (Xinhua/Bai Xuefei)
Novak Djokovic of Serbia reacts during the men's singles fourth round match against Chung Hyeon of South Korea at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Djokovic lost by 0-3. (Xinhua/Bai Xuefei)