Hazel Irvine presents live coverage of the evening session on day 13 at the Crucible Theatre in Sheffield, featuring the opening eight frames of the second semi-final. Mark Williams became the oldest player to appear in the last four of this competition since Ray Reardon in 1985 when he faced Judd Trump last year, but it was 'The Juddernaut' who lead 5-3 at the end of the opening session following a century in the final frame. With commentary and analysis from Steve Davis, Ken Doherty, Steven Hallworth, Stephen Hendry, John Parrott, Joe Perry, Dennis Taylor and Lee Walker