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Denmark's Anders Antonsen compets against his teammate Rasmus Gemke during the men's singles second round match at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 19, 2019. (Xinhua/Li Bo)

Denmark's Anders Antonsen compets against his teammate Rasmus Gemke during the men's singles second round match at China Open 2019 badminton tournament in Changzhou, east China's Jiangsu Province, Sept. 19, 2019. (Xinhua/Li Bo)