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Zhao Zhaoyan of China serves to Horacio Cifuentes of Argentina during the first round of men's singles match at the 2019 ITTF Chanllenge Plus North American Open in Markham, Canada, Dec. 6, 2019. (Photo by Zou Zheng/Xinhua)
Zhao Zhaoyan of China serves to Horacio Cifuentes of Argentina during the first round of men's singles match at the 2019 ITTF Chanllenge Plus North American Open in Markham, Canada, Dec. 6, 2019. (Photo by Zou Zheng/Xinhua)