Live coverage of the afternoon session on day one at the Crucible Theatre in Sheffield, featuring the opening frames of Mark Williams and Ziao Guodong's respective first-round matches against qualifiers. Williams withstood a barrage of 466 unanswered points from Wu Yize to end last year's corresponding session 5-4 ahead. With commentary and analysis from Steve Davis, Ken Doherty, Steven Hallworth, Stephen Hendry, John Parrott, Joe Perry, Dennis Taylor and Lee Walker