Karen Khachanov of Russia returns a shot during the men's singles second round match against Juan Martin del Potro of Argentina at Australian Open 2018 in Melbourne, Australia, Jan. 18, 2018. Karen Khachanov lost 1-3. (Xinhua/Li Peng)
Highlights of second round matches at Australian Open
Source: Xinhua| 2018-01-18 19:47:17|Editor: Yamei
KEY WORDS:Australian Open
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