Staff WriterAt the Irish Challenge, 20-year-old Frenchman Oihan Guillamoundeguy—and his trusty brother-caddie—dug in, dug deep, and walked off with a three-shot victory at Killeen Castle that was as graceful as it was gutsy.
Guillamoundeguy carded a closing 70 to finish 11 under for the week, well clear of Swiss challenger Ronan Kleu, who lurked at eight under.
A Leap in the Road to Mallorca Rankings
With that win at the Irish Challenge, Oihan vaults from 15th to sixth in the Road to Mallorca Rankings—solid evidence that he’s not just playing here; he means business.
Only the top 20 get promotion to the DP World Tour, and this move makes his season trajectory feel less hopeful gamble and more earned inevitability.
Brother Knows Best
The story’s heart, though, lies in how he did it—with his brother on the bag all season.
“I’m just feeling so proud of myself,” he said. “Today wasn’t the easiest day.
“I didn’t play really good but I managed it well with my brother. I would like to thank him from the bottom of my heart. He’s doing an amazing job with me and I love him so much. I’m super proud.
“The goal today was to play how I did the first three days. I know that I like tough courses, and this was a proper golf course and a great test of golf. I was feeling really good out there.
“I think I’ve made a big move towards the DP World Tour. I will give my best for the rest of the season and keep doing a really good job with my brother on the bag.”
They played it smart. Starting three shots off the lead, he birdied the second, slipped one on the third, then bounced back with birds at six and eight—co-leading with Denmark’s Jeppe Kristian Andersen by the turn.
The Defining Swing on Nine
The most dramatic moment? Hole nine.
“On nine when I made a birdie and he made double, I hit one of the most beautiful shots of my golf life,” he recalled. “It bounced just short of the flag, hit it and went 20 yards away.
“I made the putt and I think that was the moment I knew I had a good chance. I had a three-shot lead, and I just needed to keep doing what I was doing. I’m super proud. Now let’s see what the end of the year has to offer.”
A bogey on 13 flirted with drama, but Guillamoundeguy steadied—playing par golf down the stretch to seal the Irish Challenge win.
Andersen, Moran, and That Irish Shine
Andersen settled for third at seven under. Home-grown Robert Moran was the top Irish finisher in fourth, bagging the Christy O’Connor Jr Memorial Trophy and a coveted spot in the Amgen Irish Open at The K Club.
“To win a trophy named after one of Irish golf’s legends is amazing,” he said.
“It was a great opportunity this week and I’m delighted to have taken it.
“I’ve played The K Club a good few times as it is 30 minutes from my house. The Amgen Irish Open in a few weeks will be fun.”
Italian Stefano Mazzoli (also tied fifth) claimed the final DP-World-Tour promotion place. Rounding out that group at five under were Ireland’s Paul McBride, Swiss Benjamin Rusch, Dane Gustav Frimodt, and England’s Will Enefer.
The top five in the Road to Mallorca remain unchanged—with Joshua Berry still leading the pack.
What’s Next?
The Irish Challenge has set a vivid tone for this season—young contenders, familiar foes, and dramatic swings.
Next stop: Vierumäki, Finland, August 14–17 for the Finnish Challenge supported by the Finnish Golf Union. Guillamoundeguy’s shoes will be hard to fill—or match.
