Tullamore's Stuart Grehan and Castletroy's Chloe Ryan finished in the Top-20 in the South American Amateur Championship in Colombia.
Ryan was the best of the Irish quartet in action at Barranquilla Country Club as she closed with a three over 75 to tie for 12th on 313 behind winner Lucia Gutierrez of Peru (300) in the women's competition.
Gutierrez closed with a 72 to win by a shot on 12 over par from Scotland's Emma Dryburgh (75) while Holywood's Jessica Carty shared 23rd on 323 after a final round 78.
In the men's competition, 23-year old Englishman Paul Howard closed with a three under 69 to win by six strokes on four under 284 from Colombia's Ricardo Celia, whose 68 was enough to relegate Howard's compatriot Jimmy Mullen to third on four over after a disappointing final round 76.
“It's incredible," said Howard, who plays golf full time. "I could have asked for a better end to a great week. It was my first time here and I loved it. We had a great week, playing in difficult contentions and I'm happy I was able to come through and win.”
Grehan closed with an excellent, bogey-free 69, the joint second best score of the day, to leap into a share of 19th on 12 over par 300.
"Stuck in it till the end, great trip and experience," he tweeted. "Battled through the 4 days! #thatsgolf #goodandbad"
Claremorris' Stephen Healy, whose clubs were delayed in transit and did not arrive until Thursday, had to settle for joint 31st on 307 after a final round 78.