Adrian Meronk gained four shots in his final four holes to win the Horizon Irish Open at Mount Juliet in County Kilkenny.
The Polish golfer hit back-to-back birdies on the 15th and 16th holes and followed up with an eagle on the 17th to win the competition by three shots.
New Zealand’s Ryan Fox finished in second place on 17 under with South Africa’s Thriston Lawrence one shot further back in third place.
Shane Lowry was the highest-placed Irish golfer having carded a final round of 67 leaving him in a four-way tie for ninth place on 12 under along with Aaron Rai, Lucas Herbert and Espen Kofstad.
Meanwhile, Seamus Power and Padraig Harrington both finished in a seven-way tie for 30th place on 7 under par while a closing round of 70 saw Niall Kearney finish on 2 under.
