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Dominic Thiem of Austria serves during the men's singles fourth round match against Tennys Sandgren of the United States at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Dominic Thiem lost 2-3. (Xinhua/Li Peng)
Dominic Thiem of Austria serves during the men's singles fourth round match against Tennys Sandgren of the United States at Australian Open 2018 in Melbourne, Australia, Jan. 22, 2018. Dominic Thiem lost 2-3. (Xinhua/Li Peng)