Eight players remain in with a shot of glory in the revamped round-robin competition.
Former champions John Higgins and Joe Perry completed the line-up for Stage Three of the Championship League in snooker on Thursday.
The winners from two final groups containing four players in each will determine Friday’s overall finalists in Milton Keynes.
Higgins and Perry join Kyren Wilson and Ken Doherty in Group 2 after making it through the second stage of the newly-upgraded ranking event.
Perry, champion when the Championship League began in its original invitational form way back in 2008, earned seven points from a possible nine in going undefeated from Group H.
Two-time winner Higgins, meanwhile, emerged from a tight group with Martin Gould, Jamie Clarke, and Tom Ford.
Gould’s failure to win his last fixture against Clarke gifted Higgins the opportunity to steal top spot, which he grasped with both hands thanks to a 3-0 defeat of Ford.
“Really happy” 😁
“Over the moon” 🌚
— Championship League Snooker (@CLSnooker) October 29, 2020
In what is the third Championship League event in snooker this calendar year, Judd Trump and Mark Selby are among those in action in Group 1 of the third phase.
The Englishmen have a couple of Chinese competitors for company, with Zhou Yuelong and Zhao Xintong bidding for a maiden ranking success.
After the mini leagues are completed, the two table-toppers advance to the final where they will face off against one another over the short best-of-five frames to decide the tournament’s champion.
All eight players have already earned £7,000 to get this far, but the player who can etch his name onto the silverware will collect an overall sum of £33,000.
Live coverage is on FreeSports TV and Matchroom.Live.