William Mouw wins ISCO Championship in Louisville for his first PGA Tour victory
Ryan Black- William Mouw secured his first PGA Tour victory at the ISCO Championship.
- Mouw shot a final round 61 to finish at 10 under, one stroke ahead of Paul Peterson.
- The 24-year-old Californian turned pro in 2023 after playing collegiately at Pepperdine.
William Mouw won the ISCO Championship on Sunday at Hurstbourne Country Club, holding off a host of challengers for his first career PGA Tour victory.
Mouw posted a 9-under 61 in the final round to finish 10 under overall. He topped Paul Peterson — who began the day atop the leaderboard at 8 under — by one shot.
Peterson was 2 over through nine holes Sunday before making a back-nine charge, with birdies on 10, 14 and 16. But a birdie bid slid past the hole on the par-3 17th, and he was unable to convert a lengthy birdie putt just off the 18th green to force a sudden-death playoff.
A 24-year-old from California, Mouw played collegiately at Pepperdine and turned pro in 2023. This week was his 20th PGA Tour start. Prior to Sunday, his best finish on the circuit was a tie for sixth at the Puerto Rico Open in March. He had $504,400 in career earnings but he picked up a check for $720,000 for this victory.
He had a chance to set the course record with a 60 and needed a birdie on the 18th hole to do so, but he said he didn't realize that was a possibility as he walked up the final fairway.
"No, I had no clue. I was just, I mean, I was thinking 59 a little bit on 16, if I could birdie the last three, and I misread the putt on 16," he said after his round in an interview that occurred before it was determined he was the winner. "It was fun to bounce back with a birdie on 17, but yeah, it was nice."