Michael Hoey ended the Portugal Masters 12 shots behind winner Shane Lowry after carding a final round of one-under-par 70 to finish on two under.
The Belfast player tied for 52nd place following a round which included five birdies, two bogeys and a double bogey.
Lowry landed his first title since winning the Irish Open as an amateur thanks to a closing 66.
He enjoyed a one-shot lead over runner-up Ross Fisher at the end of the tournament on the Algarve.
New Zealander Michael Campbell was a further shot behind in third position, with third round leader Bernd Wiesberger fourth on 11 under and Richard Finch fifth on 10 under.
Lowry had gone into the final round four shots behind Wiesberger.
Padraig Harrington finished on six under after a 71 and Damien McGrane four under after posting a 69.
Peter Lawrie also recorded a 69 to end on three under.
Darren Clarke and Gareth Maybin both missed the halfway cut.