Jay Williamson
Justin Arch "Jay" Williamson IV is an American professional golfer who has played on the PGA Tour and the Nationwide Tour.
Williamson was born in St. Louis, Missouri. After graduating from Trinity College, he turned professional in 1990.
Williamson has no PGA Tour victories, although he has finished 2nd twice, both playoff losses – to Hunter Mahan at the 2007 Travelers Championship, and to Kenny Perry at the 2008 John Deere Classic. He won once on the Nationwide Tour: the 2007 Fort Smith Classic. He has more than $5 million in career earnings.
Professional wins (2)
Nationwide Tour wins (1)
Nationwide Tour playoff record| No. | Year | Tournament | Opponent | Result |
| 1 | 1998 | Nike Omaha Classic |  Matt Gogel | Lost to par on fourth extra hole |
Other wins (1)
- 1991 Kansas Open
Playoff record
| No. | Year | Tournament | Opponent | Result |
| 1 | 2007 | Travelers Championship | Hunter Mahan | Lost to birdie on first extra hole |
| 2 | 2008 | John Deere Classic | Brad Adamonis, Kenny Perry | Perry won with par on first extra hole |
Results in major championships
CUT = missed the half-way cutDQ = Disqualified
"T" = Tied
Note: Williamson never played in the Masters Tournament or the PGA Championship.