Zhao Xintong has dominated Mark Williams in the opening session of the world snooker championship final by running up a 7-1 lead in his bid to become the first Chinese winner of the sport’s biggest prize.

Mark Williams will have to mount a fightback for the ages if he is to win his fourth world title, after succumbing to an outstanding display of snooker by Zhao Xintong, the rising star of the game, who has raced into a 7-1 lead in the final at The Crucible.