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Caroline Wozniacki of Denmark serves during the women's singles second round match against Anastasia Pavlyuchenkova of Russia at 2017 China Open tennis tournament in Beijing, capital of China, Oct. 2, 2017. (Xinhua/Meng Yongmin)
Caroline Wozniacki of Denmark serves during the women's singles second round match against Anastasia Pavlyuchenkova of Russia at 2017 China Open tennis tournament in Beijing, capital of China, Oct. 2, 2017. (Xinhua/Meng Yongmin)