China’s Liang Wenbo reached Sunday’s UK Championship final with a scrappy 6-4 feat over universe series 81 David Grace.
The 28-year-old started nervously and Yorkshireman Grace took advantage to open adult a 3-1 lead during a break.
Liang, universe ranked 29, recovered from 4-2 down to take a subsequent 4 frames and strech usually a second ranking final.
World series one Mark Selby and Australian Neil Robertson accommodate in a other semi-final during 19:30 GMT.
Despite winning a opening frame, Romford-based Liang looked a opposite actor from a one who racked adult 3 unbroken centuries opposite Hong Kong’s Marco Fu in a quarter-finals.
He seemed irritable as being favourite, spasmodic slapping his possess face as his frustrations boiled over.
Grace, who cleans snooker tables to addition his earnings, won 3 frames in a quarrel with a top mangle of usually 52 as a competition took a while to gentle adult a ability throng in York.
Liang, whose usually other ranking final was a Shanghai Masters in 2009, banged in a match-best 110 mangle in a initial support after a interlude to revoke a arrears, though Grace non-stop adult a two-frame lead again to lead 4-2.
The Chinese won dual serve scrappy frames to turn a compare in a eighth before a essential 50 mangle gave him a lead for a initial time given a opening frame.
He let a gentle lead trip in a 11th, though Grace missed a elementary pinkish when he had to transparent a colours.