Mark Allen and Ali Carter have aired their grievances about Zhao Xintong 's ranking points controversy. World Snooker Championship finalist Zhao will go straight into the top 16 if he beats Mark Williams at the Crucible, despite amateur players generally entering the professional circuit with zero ranking points.

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