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Denisa Allertova of the Czech Republic returns a shot during the women's singles fourth round match against Elina Svitolina of Ukraine at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. (Xinhua/Bai Xuefei)
Denisa Allertova of the Czech Republic returns a shot during the women's singles fourth round match against Elina Svitolina of Ukraine at Australian Open 2018 in Melbourne, Australia, Jan. 21, 2018. (Xinhua/Bai Xuefei)