The World Snooker Championship rolls on with the action at the Crucible Theatre in Sheffield heating up as the tournament reaches the semi-final stage.A number of top contenders have already fallen, including defending champion Kyren Wilson - pipped by Lei Peifan in the first round - and four-time winner Mark Selby,

Ronnie O’Sullivan is one match away from the World Snooker Championship final, but must first face Zhao Xintong in the semi-finals at the Crucible.The seven-time champion has had a relatively kind passage into the last four,