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Marin Cilic of Croatia hits a return during the men's singles first round match against Vasek Pospisil of Canada at Australian Open 2018 in Melbourne, Australia, Jan. 15, 2018. Marin Cilic won 3-1. (Xinhua/Zhu Hongye)
Marin Cilic of Croatia hits a return during the men's singles first round match against Vasek Pospisil of Canada at Australian Open 2018 in Melbourne, Australia, Jan. 15, 2018. Marin Cilic won 3-1. (Xinhua/Zhu Hongye)