What do a 61 in a PGA Tour final round and a seven-shot comeback have in common? Both became defining numbers in the rise of American golfer William Mouw. The California native earned his first PGA Tour victory at the 2025 ISCO Championship, closing with a brilliant 9-under-par 61 at Hurstbourne Country Club in Louisville, Kentucky.
This William Mouw Biography covers his age, hometown, family background, college golf career, professional breakthrough, wife, children and key career facts as of 2026.
William Mouw Quick Facts
| Full Name | William Mouw |
|---|---|
| Date of Birth | September 23, 2000 |
| Age in 2026 | 25 until September 22, 2026; turns 26 on September 23, 2026 |
| Hometown | Chino, California, United States |
| Nationality | American |
| College | Pepperdine University |
| Turned Professional | 2022 |
| Notable PGA Tour Win | 2025 ISCO Championship |
William Mouw Age and Early Life
William Mouw was born on September 23, 2000, in Chino, California. He is part of a generation of American golfers who developed through elite junior tournaments, college competition and the PGA Tour’s developmental pathway.
In 2026, Mouw is 25 years old for most of the year and celebrates his 26th birthday on September 23. Growing up in Southern California gave him access to a strong junior-golf environment, competitive courses and year-round playing conditions.
Before becoming a professional golfer, Mouw attended Ontario Christian High School in Southern California. He built a reputation as a talented junior player before continuing his career at Pepperdine University, one of the most respected college golf programs in the United States.
William Mouw Hometown: Chino, California
Mouw’s hometown is Chino, California, a city in San Bernardino County in the Inland Empire region of Southern California. Although Chino is not traditionally considered one of golf’s major media hubs, its proximity to Los Angeles, Orange County and numerous championship golf facilities provided an excellent foundation for an aspiring player.
His California background remains an important part of the William Mouw biography. The state has produced many successful PGA Tour professionals, and Mouw’s development followed a familiar route: junior golf, high-level high school competition, NCAA golf and professional tours.
Pepperdine University and Amateur Golf Career
William Mouw played college golf for the Pepperdine Waves. Pepperdine’s golf program has a distinguished history and has produced major champions and PGA Tour winners, including Jason Allred, Michael Kim and Sahith Theegala.
At Pepperdine, Mouw competed in NCAA tournaments and West Coast Conference events while sharpening the consistency needed for professional golf. College golf gave him experience on demanding championship layouts, where players must manage firm greens, difficult pin positions and tournament pressure over 54-hole and 72-hole formats.
He turned professional in 2022, beginning the next stage of his career through professional qualifying events and developmental-tour opportunities.
William Mouw PGA Tour Career and 2025 ISCO Championship Win
The defining achievement of Mouw’s professional career came at the 2025 ISCO Championship. Playing at Hurstbourne Country Club in Louisville, Kentucky, he produced one of the most memorable final rounds of the PGA Tour season.
Mouw began the final day seven shots behind the lead but charged through the field with a 9-under 61. His tournament total of 10-under-par 270 delivered his first PGA Tour title.
The victory was especially significant because it showed both low-scoring ability and resilience. A final-round 61 requires exceptional iron play, controlled distance management and confidence on the greens. For Mouw, the win also elevated his profile among PGA Tour fans searching for the next emerging American golf talent.
William Mouw Wife and Children
As of 2026, William Mouw has not publicly confirmed that he is married. There is no widely verified public information identifying a wife or confirming a marriage.
Likewise, there is no reliable public reporting that Mouw has children. He has kept much of his personal life out of the spotlight, with public attention focused primarily on his golf career, tournament results and PGA Tour progress.
William Mouw Parents and Family
Information about William Mouw’s parents and immediate family is limited in major public golf biographies and PGA Tour coverage. He has not made his family members a major feature of his public profile, so names and personal details should not be treated as confirmed without a direct statement from Mouw or a reliable family source.
What is clear is that his path from Chino to Pepperdine and the PGA Tour required long-term support, travel and commitment often associated with competitive junior golf development.
William Mouw Biography Summary
William Mouw is an American professional golfer from Chino, California, born on September 23, 2000. A former Pepperdine Waves player, he turned professional in 2022 and gained national attention by winning the 2025 ISCO Championship with a final-round 61. While details about his wife, children and parents remain private, his on-course story is increasingly public: Mouw is a young PGA Tour winner with the skill and composure to contend on demanding tournament golf courses.
