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Stefanos Tsitsipas of Greece returns the ball during the men's singles final match against Dominic Thiem of Austria at 2019 China Open tennis tournament in Beijing, capital of China, Oct. 6, 2019. (Xinhua/Li Yibo)
Stefanos Tsitsipas of Greece returns the ball during the men's singles final match against Dominic Thiem of Austria at 2019 China Open tennis tournament in Beijing, capital of China, Oct. 6, 2019. (Xinhua/Li Yibo)