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Sofia Kenin of the United States hits a return during the women's singles quarterfinal match against Ons Jabeur of Tunisia at the Australian Open tennis championship in Melbourne, Australia on Jan. 28, 2020. (Xinhua/Bai Xue)
Sofia Kenin of the United States hits a return during the women's singles quarterfinal match against Ons Jabeur of Tunisia at the Australian Open tennis championship in Melbourne, Australia on Jan. 28, 2020. (Xinhua/Bai Xue)