At age 8, Na's family moved from South Korea to the United States. Took up the game a year later and by the time he left the junior golf program had become the number one junior player in the U.S. By-passed senior year of high school and college to turn professional at age 17. Also won the 2002 Long Beach Open. Spent 2002 and 2003 on the Asian Tour, where he finished 46th on the Order of Merit in 2003 and fourth in 2002. Became the third-youngest winner in Asian Tour history at 19 years and three months when he won the 2002 Volvo Masters of Asia by two strokes. Added five other top-10s that season. The win qualified him for the 2003 WGC-NEC Invitational, where he finished T71, his only event in the money on the PGA Tour in three career starts.
2003 PGA European Tour Summary
Tournaments entered - 14; in money - 12; top-10 finishes - 1; scoring average 70.81 (ranked N/A); money ?217,786 or �151,146 (ranked N/A); Best finish, T6th, Dubai Desert Classic. Earned first PGA Tour card at age 20 by finishing T21 at the 2003 Qualifying Tournament. Will be youngest member of the PGA Tour in 2004. Medalist by eight strokes at La Purisima CC in Lompoc, CA, during first stage of tournament. Finished T3 in second stage at Oak Valley GC in Beaumont, CA.
The youngest member on the PGA Tour in 2004.
2004 PGA Tour Summary
Tournaments entered - 32; Rounds Played - 96; in money - 19; top -10 Finishes - 2; money $901,158 Rank (87th); Best finish: T-3rd at the Southern Farm Bureau Classic
Scoring - 71.21 / (105th); Driving Distance - 280.1 / (157th); Driving Accuracy - 68.7% / (39th); GIR - 64.7% / (107th); Putting - 1.775 / (86th); Birdie Average - 3.49 per rd / (105th) / Total Birdies - 335; Sand Saves - 49.7% / (83rd); All-Around Rank - 834 / (116th)