Justin Sun
| Division | 18 |
| Home Town | Fremont, CA |
| USTA Section | Northern California (NCTA) |
| Singles Line | 0 |
| Singles Seed | 0 |
| Doubles Line | 0 |
| Doubles Seed | 0 |
2013
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Azat Hankuliyev / Spencer Lang def. Alexander Keyser / Justin Sun | 6-3, 6-4 |
Boys 16 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Justin Sun def. Alan Sweet | 6-3, 6-4 |
| 2nd Rd | Justin Sun def. Gabriel Rapoport | 6-3, 6-4 |
| 3rd Rd | Tommy Paul (3) def. Justin Sun | 6-2, 6-3 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 3rd Rd | Justin Sun def. Max Liu | 6-4, 6-3 |
| 4th Rd Qualifying | Michael Genender def. Justin Sun | 6-1, 6-2 |