For a very brief period early in his professional career,
Will Smith sponsored O'Neal. O'Neal had a tough first season on the tour recording only two top-10 finishes ending 59th on the money list. In the following season, O'Neal only played three events on the Buy.com Tour and lost his tour card for the 2003 season. In 2004, O'Neal once again missed out on a
PGA Tour card at qualifying school by a single stroke but in doing so regained his playing rights for the
Nationwide Tour for the 2005 season. The return to the Nationwide Tour proved more successful and during the 2005 season O'Neal recorded his best finish to date, a second place at the 2005
Northeast Pennsylvania Classic. O'Neal maintained his good form throughout 2005 and 2006 finishing 44th and 36th on the tour money lists respectively. However his form dropped in 2007 and 2008 and he was unable to retain his card following the 2008 season. These wins together assisted O'Neal to a third-place finish on the PGA Tour Latinoamérica Order of Merit which was sufficient for him to regain his tour card for the
2014 Web.com Tour. At age 42, O'Neal finally played his first PGA Tour event after qualifying for the
2015 U.S. Open, where he missed the cut. O'Neal also played on the Advocates Pro Golf Tour, a professional golf tour that aims to open more playing opportunities for minorities. In 2022, O'Neal was one of five golfers to earn a
PGA Tour Champions card through Q School. O'Neal won the
Dominion Energy Charity Classic in October 2024, his first PGA Tour Champions victory. His victory earned him $350,000 and secured his card for the
2025 PGA Tour Champions season. ==Amateur wins==