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Australia's Neil Robertson competes during the first session of his quarter final match against Scotland's John Higgins at World Snooker Championship 2019 in Sheffield, Britain on April 30, 2019. (Xinhua/Jon Super)
Australia's Neil Robertson competes during the first session of his quarter final match against Scotland's John Higgins at World Snooker Championship 2019 in Sheffield, Britain on April 30, 2019. (Xinhua/Jon Super)