| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Shao, Aiden (11)
|
MRFLY |
1:06.27 |
1:06.80 |
0.53 |
| 2 |
Corcuera, Christopher (12)
|
MRLGAC |
1:08.88 |
1:07.94 |
-0.94 |
| 3 |
Shim, Peter W (12)
|
MRFLY |
1:11.11 |
1:11.51 |
0.40 |
| 4 |
Liu, Ziyuan (12)
|
MRLGAC |
1:12.64 |
1:13.35 |
0.71 |
| 5 |
Aguilar, Emiliano (12)
|
MRRED |
1:30.03 |
1:22.33 |
-7.70 |
| 6 |
Prada, Isaac (11)
|
MRFLY |
1:25.92 |
1:24.55 |
-1.37 |
| 7 |
Mei, Jayden (12)
|
MRFLY |
1:29.02 |
1:26.38 |
-2.64 |
| 8 |
Santiago-Otero, Jonathys E (11)
|
MRKBM |
1:33.88 |
1:34.96 |
1.08 |
| 9 |
Guo, Owen (11)
|
MRFLY |
|
1:39.29 |
- |
| 10 |
Hernandez, Emrick E (11)
|
MRKBM |
1:32.00 |
1:43.83 |
11.83 |