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 fired a nine-under par 61 to surge to a one-shot victory in the ISCO Championship in Kentucky on Sunday, capturing his first US PGA Tour title in his 20th start.He walked off the 18th with a 10-under par total of 270 but had to wait two hours to see if his three-shot lead would hold up.

William Mouw claimed his first PGA Tour title on Sunday at the 2025 ISCO Championship. The 24-year-old shot a bogey-free final round of 9-under 61 to finish with a total of 10-under 270, winning the event in his 20th start on the Tour. With this victory, Mouw earned a two-year PGA Tour exemption and a spot in next year’s PGA Championship.