Limerick's Pat Murray tied for 23rd at the Portuguese International Amateur Championship in Montado, near Lisbon, after a final round of 74 saw him finish on one-over-par.
It was his highest score of the four days, and Murray hoped for a little better after carding a 70 on day three in an event that was badly affected by fog.
The 2012 South of Ireland champion made a promising start with a birdie on the third, but bogeys on the seventh, ninth, 10th and 13th saw him drop out of the top 10 before a birdie on the 17th.
Home-grown star Goncalo Pinto took the title with an 11-under-par 277, finishing two ahead of England's Jerome Titlow, while another Englishman, Harry Casey, was tied for third with Mike Miller of the US.
Portugal's team of Pinto, Joao Carlota and Miguel Gaspar also secured the team title on 417, seven better than Denmark and 10 better than England.
Had he matched his total for day three, Murray would have found himself three-under, in joint 11th.
He was the only Irishman to make the final round's play, with The Island's Gavin Moynihan, Mattheu McAlpin (Royal Portrush), Alex Gleeson (Castle), Eddie McCormack (Galway) and Belvoir Park's Matthew Wylie all having missed the cut.