O'Sullivan through to face Williams

Ronnie O'Sullivan set up a second-round clash with Mark Williams by stumbling over the finish line in his Crucible opener against Liang Wenbo.

Title favourite O'Sullivan looked in trouble at the Betfred.com World Championship after letting a 9-3 lead dwindle to 9-7.

But a break of 73 in the 17th frame saw him clinch his place in the last 16.