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England's Mark Selby competes during the first round first session with China's Zhao Xintong at World Snooker Championship 2019 in Sheffield, Britain on April 22, 2019. (Xinhua/Jon Super)
England's Mark Selby competes during the first round first session with China's Zhao Xintong at World Snooker Championship 2019 in Sheffield, Britain on April 22, 2019. (Xinhua/Jon Super)