Live coverage from Sheffield's Crucible Theatre of the semi-finals of the World Snooker Championships. History was made last year when two Asian players, Ding Junhui and Marco Fu, were among the semi-final participants. Junhui went on to suffer defeat in the final to current champion, Mark Selby. Known as 'The Jester from Leicester', Selby will be keen to retain his title but will face stiff competition from the likes of John Higgins, Ronnie O'Sullivan and Ding Junhui. Live coverage will be interrupted for an hour at 6pm before resuming at 7pm.