| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Paz, Hector J (16)
|
FGMACM |
59.56 |
58.78 |
-0.78 |
| 2 |
Fernandez, Jean C (17)
|
FGMACM |
|
59.76 |
- |
| 3 |
Lezcano, Carlos R (15)
|
FGMACM |
1:00.48 |
1:00.55 |
0.07 |
| 4 |
Marin, Emilio A (16)
|
FGMACM |
1:05.36 |
1:04.13 |
-1.23 |
| 5 |
Avila, Alexander (16)
|
STMSC |
1:06.13 |
1:05.21 |
-0.92 |
| 6 |
Manzano, Carlos J (19)
|
FGMACM |
1:07.01 |
1:07.87 |
0.86 |
| 7 |
Moulheres, Bruno A (16)
|
FGMACM |
|
1:08.29 |
- |
| 8 |
Desrouleaux, Joshua D (17)
|
FGNMST |
56.94 |
1:09.25 |
12.31 |
| 9 |
Hernandez, Emmanuel E (15)
|
FGMACM |
|
1:13.26 |
- |
|
Castro, Bryan A (17)
|
FGMACM |
1:13.05 |
NS |
- |
|
Ramos, Daniel A (16)
|
FGMACM |
57.22 |
NS |
- |