Jonathan Caldwell shot a four-under-par 67 to book his place in the unique final round of the Cyprus Showdown.
Only the top 16 and ties after round three advanced to the final 18 holes, with all scores then reset to par, and the trophy will go to the player who can post the lowest round on Sunday under the innovative format.
Down native Caldwell hit six birdies today in Aphrodite Hills to finish in a tie for 12th and seal his spot.
England's Matthew Jordan carded the joint lowest round of the day with a seven-under 64.
Jordan is seeking a first Tour win but the 24-year-old has just 27 appearances under his belt.
"You just have to try get off to a good start tomorrow," he said. "I think if you’re struggling through nine you’re going to make it tough for yourself, so I’m going to concentrate on trying to start well.
"If it doesn’t happen it doesn’t happen, but I think just try start well and see where it goes."
Welsh Ryder Cup hero Jamie Donaldson and Cyprus Open winner also advanced to the final round.