Xi'an, Oct. 13 -- Mark Williams saw off Shaun Murphy 10-3 in a best-of-19 game here today, winning the Xi'an Grand Prix and moving himself above Ronnie O'Sullivan into the fourth spot on the world rankings.

Williams, who was one step away from becoming the oldest ranking event winner in snooker history ahead of the final, taking a 4-0 lead before the first intermission.

Murphy pulled one back in the fifth frame after a break of 69, while Williams took all four rest three frames scheduled on afternoon session, extending his lead to six frames before the final session. Williams kept moving in the ninth frame before Murphy won two in a row and made it 8-3.

However, Murphy had a frame-winning opportunity but couldn't convert it in the 12th, ...