Billy Twomey triumphed in the CSIO 5 star Grand prix in St. Gallen, Switzerland on Sunday, riding Sue and Ed Davies's brilliant young stallion Je Taime Flamenco.
With €200,000 on offer, only three riders were clear going into the jump off, although 12 riders were taken through.
The three contenders where Billy for Ireland, Marcus Ehning for Germany and Richard Spooner for the USA.
Billy was the only rider to go clear in the jump off guaranteeing him the €61,000 winners prize.
A delighted Billy stated "Je Taime has been going brilliantly all year with his grand prix wins in Belfast, Amsterdam and his consistent results in the Meydan Nations Cup Series. I am delighted for his owners, Sue and Ed Davies who have supported me for many years.
"My main focus for Je Taime Flamenco this year, is selection for the Europeans at Windsor in August, so I don't want to over jump him before then. I am lucky to have such strength and depth in my string of horses for this season, with the addition of the Kennedy family's Kec Maximum Joe."
The Pewit team have a weekend at home this weekend, competing the young horses at local shows.