Judd Trump punished a series of costly errors from Mark Williams to build a 5-3 lead in their World Snooker Championship semi-final at the Crucible. A tense start to the match was filled with mistakes and it was a missed routine black by Williams in the eighth frame that enabled Trump to establish a healthy overnight advantage.

Judd Trump was in a heated discussion with the referee at the end of the 17th frame of his World Snooker Championship semi-final with Mark Williams