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Kiki Bertens of the Netherlands reacts during the women's singles semifinal match against Ashleigh Barty of Australia at the 2019 China Open tennis tournament in Beijing, capital of China, Oct. 5, 2019. (Xinhua/Ren Chao)
Kiki Bertens of the Netherlands reacts during the women's singles semifinal match against Ashleigh Barty of Australia at the 2019 China Open tennis tournament in Beijing, capital of China, Oct. 5, 2019. (Xinhua/Ren Chao)