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Dominic Thiem of Austria returns to Hyeon Chung of South Korea during the 2018 Mubadala World Tennis Championship in Abu Dhabi, the United Arab Emirates (UAE), on Dec. 28, 2018. Dominic Thiem lost 0-2. (Xinhua/Mahmoud Khaled)
Dominic Thiem of Austria returns to Hyeon Chung of South Korea during the 2018 Mubadala World Tennis Championship in Abu Dhabi, the United Arab Emirates (UAE), on Dec. 28, 2018. Dominic Thiem lost 0-2. (Xinhua/Mahmoud Khaled)