Brandon Stone will take a two-shot lead into the final round of the Portugal Masters in Vilamoura.
South African Stone fired a third consecutive round of 66 to get to 15 under and lead the way from countryman Dean Burmester and Oliver Fisher, with Steven Brown a shot further back on the Algarve.
Despite registering just one top-10 all season, Stone's win at last year's Scottish Open means he is guaranteed a European Tour card for next season, but the same cannot be said of Brown.
Only the top 115 on the Race to Dubai are guaranteed to keep their playing privileges at the end of play on Sunday and barring a disaster Fisher - who started the week in danger at 112th - will be safe after provisionally moving up to 76th.
Brown will need a good final round to force his way into the reckoning, sitting in a provisional 124th after starting the week 150th.
Overnight leader Fisher made a hat-trick of bogeys from the fifth to slide down the leaderboard but hit back with four birdies in a row from the 12th in a 70.
Paul Dunne, who has now lost his Tour card, Padraig Harrington and Michael Hoey all missed the cut on Friday.