
England's Ronnie O'Sullivan competes during the second session of his quarterfinal with China's Ding Junhui at the World Snooker Championships 2017 at the Crucible Theatre in Sheffield, Britain on April 25, 2017. (Xinhua/Han Yan)

England's Ronnie O'Sullivan competes during the second session of his quarterfinal with China's Ding Junhui at the World Snooker Championships 2017 at the Crucible Theatre in Sheffield, Britain on April 25, 2017. (Xinhua/Han Yan)