Ronnie O'Sullivan and first-time semi-finalist Zhao Xintong are tied 4-4 heading into the second session of their World Snooker Championship semi-final.
O'Sullivan's pedigree and experience on the big stage did not deter Zhao, who took a 2-0 lead and then finished impressively with a break of 86 - the highest of the match to date - to leave things all square after the initial leg of their best-of-33 contest.
