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Alison Riske of the United States serves during the women's singles second round match against Zhu Lin of China at the 2020 Australian Open tennis tournament in Melbourne, Australia, Jan. 22, 2020. (Xinhua/Zhu Hongye)
Alison Riske of the United States serves during the women's singles second round match against Zhu Lin of China at the 2020 Australian Open tennis tournament in Melbourne, Australia, Jan. 22, 2020. (Xinhua/Zhu Hongye)