| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Pereira, Alessandro (12)
|
FGAZFL |
38.49 |
36.67 |
-1.82 |
| 2 |
Moya, Kevin (12)
|
FGSOFL |
41.52 |
41.40 |
-0.12 |
| 3 |
Ortiz, Karvin Jay (12)
|
FGAZFL |
44.03 |
42.33 |
-1.70 |
| 4 |
McPeek, Ethan J (12)
|
FGSOFL |
42.91 |
42.86 |
-0.05 |
| 5 |
Pelaez, Nicholas (12)
|
FGSOFL |
46.25 |
45.49 |
-0.76 |
| 6 |
Gonzalez, Felix A (12)
|
FGUSOF |
48.01 |
49.23 |
1.22 |
| 7 |
Kamlani, Zubin (12)
|
FGMCDA |
48.99 |
49.80 |
0.81 |
| 8 |
Tappin, Vincent A (11)
|
FGSWAT |
|
50.48 |
- |
| 9 |
Serhiienko, Vladyslav (11)
|
FLMSAT |
|
54.63 |
- |
| 10 |
Pereira-Ramallo, Thomas (12)
|
FGSOFL |
53.45 |
54.68 |
1.23 |
| 11 |
Kolotov, Konstantin (11)
|
FLMSAT |
|
57.12 |
- |
|
Corrieri, Adriano (11)
|
FGAZFL |
|
NS |
- |
|
McVeigh, Matt R (11)
|
FGSOFL |
46.70 |
NS |
- |