Barrie Trainor finished as he began at Greystones in the Two Coats PGA pro-am tournament, sponsored by Barry Herriot, with a bogey but in between shot down seven birdies to top the leaderboard ahead of Peter Martin.
It was an unsteady start for the South County assistant as he missed the first green to pencil in bogey four but then bagged birdie threes at the second and fourth holes, a two at the short fifth and a four at the long ninth to turn in 32 blows.
He returned in 32 also with back-to-back birdie threes at the 12th and 13th and his second two at the 14th hole.
Now six under-par the Irish Assistants' champion could afford to slip up and make bogey five at the last to finish at five-under-par 64, two strokes ahead of Martin from the Riverside Academy in Dunmurry.
The victory lurches Trainor up the Irish Order of Merit towards gaining a place in October's Srixon PGA Play-Offs at Royal Liverpool.
The winning team was led in on 92 points by Kilkenny pro Jimmy Bolger with his amateur partners being Pat Gormley (6), Paul McNaughton (10) and Conor Gormley (12). They were representing IAC-Gormley.