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England's Ali Carter reacts during the first session of his quarter final match against England's Gary Wilson at World Snooker Championship 2019 in Sheffield, Britain on April 30, 2019. (Xinhua/Jon Super)
England's Ali Carter reacts during the first session of his quarter final match against England's Gary Wilson at World Snooker Championship 2019 in Sheffield, Britain on April 30, 2019. (Xinhua/Jon Super)