Phil Harrison and Mick Hill will reprise last year's Foster's World 8-Ball Championship final in the last four of the £25,000 event tomorrow.
Harrison survived a major scare before defeating number six seed Adam Davis 9-8.
Hill, champion in 2004, came from 5-4 down to beat Gareth Hibbott 9-5.
Ely window cleaner Harrison trailed his Potteries rival 5-2, rattled by an early time fault against him.
"I wanted to jab my cue through the clock," admitted the Cambridgeshire cue man who suffers from acute deafness.
"I was struggling enough as it was and the incident did my head in.
"Four four or five frames I just couldn't think straight. So, I was really pleased to only be 5-3 down at the break.
"I felt Adam should have been 6-2 up. But I wasn't worried by the score line.
"I don't think I am in trouble, I just play the balls that are in front of me."
Harrison, bidding to become only the second player` after Gareth Potts to retain the trophy, fought back to 6-all.
Davis led again at 8-7 and missed his penultimate red for a 9-7 success.
Harrison seized his opportunity to draw level at 8-8 and then broke and dished for 9-8.
"It was my best break of the match," said Harrison. "If I'd have missed those then I didn't deserve to be here."
Hill is now two wins away from adding the world singles crown to Monday night's World Masters success.
This article was taken from World Eightball Pool Federation.
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