Diego Schwartzman of Argentina returns the ball during the men's singles fourth round match against Rafael Nadal of Spain at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. Schwartzman lost by 1-3. (Xinhua/Li Peng)
In pics: Australian Open 2018 Day 7
Source: Xinhua| 2018-01-21 19:42:02|Editor: ZD
KEY WORDS:Australian Open
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