Jonathan Sappaiboon
| Division | 16 |
| Home Town | Los Angeles, CA |
| USTA Section | Southern California (SCTA) |
| Singles Line | 95 |
| Singles Seed | 0 |
| Doubles Line | 0 |
| Doubles Seed | 0 |
2003
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | RK Bacalla / Rozell Hodges def. Jason Jung / Jonathan Sappaiboon | 4-6, 7-5, 6-2 |
Boys 16 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | RK Bacalla def. Jonathan Sappaiboon | 6-2, 6-2 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | Jonathan Sappaiboon def. James Steward | 6-4, 6-7(3), 7-5 |
| 3rd Rd Qualifying | Nick Meros (25) def. Jonathan Sappaiboon | 6-3, 6-3 |