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Naomi Osaka of Japan serves during the women's singles semifinal match against Caroline Wozniacki of Denmark at 2019 China Open tennis tournament in Beijing, capital of China, Oct. 5, 2019. (Xinhua/Xu Yanan)
Naomi Osaka of Japan serves during the women's singles semifinal match against Caroline Wozniacki of Denmark at 2019 China Open tennis tournament in Beijing, capital of China, Oct. 5, 2019. (Xinhua/Xu Yanan)