Nathan Niemiec
| Division | 18 |
| Home Town | Scottsdale, AZ |
| USTA Section | Southwest (SWTA) |
| Singles Line | 133 |
| Singles Seed | 0 |
| Doubles Line | 36 |
| Doubles Seed | 0 |
2015
Boys 18 Singles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Mwendwa Mbithi def. Nathan Niemiec | 6-2, 6-4 |
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | Nathan Niemiec def. Matthew Gamble (32) | 3-6, 7-6(3), 1-0(6) |
| 3rd Rd Qualifying | Nathan Niemiec def. Payam Ahmadi | 6-3, 6-4 |
| 3rd Rd | Asher Hirsch def. Nathan Niemiec | 6-3, 5-7, 1-0(4) |
Boys 18 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Kawika Lam / Nathan Niemiec def. Ananth Raghavan / Tripp Tuff | 6-4, 7-6(5) |
| 2nd Rd | Tommy Paul / Henrik Wiersholm (3) def. Kawika Lam / Nathan Niemiec | 6-2, 6-4 |
2013
Boys 16 Singles
Feed-In
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Bye | Automatic Advance |
| 2nd Rd | Max Pham def. Nathan Niemiec | 6-2, 6-1 |
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Jason Kros def. Nathan Niemiec | 7-5, 6-2 |
Boys 16 Doubles
Main Draw
| Round | Players | Final Score |
|---|---|---|
| 1st Rd | Vincent Lin / Michael Lorenzini def. Kawika Lam / Nathan Niemiec | 6-4, 6-3 |