Three-time champion John Higgins won four frames in a row to see off Mark Allen 6-3 and move into the UK Championship quarter-finals.
Allen overturned a 2-0 deficit with breaks of 78, 105 and 65, but a ton and two breaks of 50 plus took Higgins into a last-eight meeting with Mark Selby.
Jamie Jones also became the first Welshman to reach the quarter-finals since Matthew Stevens in 2012.
The Neath potter eased to a 6-2 win over Tamworth’s David Gilbert.
- Schedule and results
Higgins, a 28-time ranking event winner, scored a brilliant 101 to level at 3-3 and, after clinching a tense seventh frame, he closed out victory over the Northern Irishman in style with scores of 68 and 90.
“I will need to play a lot better than I have this week to win the next match,” world number four Higgins said.
“I felt good at 2-0. But for the next two or three frames my concentration went haywire. I left easy chances and he was feeding off that.
“I needed some help from Mark and I got it and that changed the game again.
“It will be a great test playing the world number one [Selby]. I am looking forward to it.”
On table two, world number 39 Jones profited from some sloppy potting to go 3-0 ahead, but missed a simple red in frame four to give world number 21, Gilbert, a boost prior to the interval.
Jones responded with a break of 96 and got the snooker he required as he won frame six on the black, before closing out victory.
The 28-year-old will play Hong Kong’s Marco Fu in Friday’s quarter-finals.
In the evening session, the final two last-16 matches sees two-time champion Mark Williams play Englishman Liam Highfield, while Belgium’s Luca Brecel takes on 2004 winner, Scotland’s Stephen Maguire.