There are two ways to look at Ronnie O’Sullivan’s stumble into the semi-finals of the World Snooker Championship.

Judd Trump, a man £100,000 richer after his 100th century of the season, returns to face Shaun Murphy in the most highly anticipated clash of the second round. He leads 10-6 after two sessions. They will begin the day at the same time as Si Jiahui and Ben Woollaston, with the Chinese potter leading 9-7.