Marcus Sebastian
| Division | 16 |
| Home Town | Woodland Hills, CA |
| USTA Section | Southern California (SCTA) |
| Singles Line | 52 |
| Singles Seed | 0 |
| Doubles Line | 73 |
| Doubles Seed | 0 |
2019
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Noah Schwartz / Zachary Schwartz def. Marcus Sebastian / Scott Yamamoto | 6-1, 6-3 |
Boys 16 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Marcus Sebastian def. Joseph Wayand | 6-4, 6-2 |
| 2nd Rd | Nathan Mao (14) def. Marcus Sebastian | 4-6, 6-2, 6-2 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 2nd Rd | Marcus Sebastian def. Andrew Immink | 6-1, 6-1 |
| 3rd Rd Qualifying | Michael Zhang def. Marcus Sebastian | 6-4, 4-6, 1-0(3) |