LOUISVILLE, Ky. — William Mouw rallied to win the ISCO Championship on Sunday for his first PGA Tour title, shooting a 9-under 61 and waiting nearly two hours to see if his 10-under 270 total would hold up.

William Mouw won the 2025 ISCO Championship at Hurstbourne Country Club in Louisville on Sunday for his first PGA Tour win.

Still, it’s worth repeating, especially now that the 24-year-old from California is a PGA Tour winner, shooting a final-round 61 Sunday to overcome a seven-shot deficit and win the ISCO Championship in his rookie season.