| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Qu, Sirui (12)
|
MRFLY |
56.79 |
56.11 |
-0.68 |
| 2 |
Lyashchenko, Serge S (12)
|
MRLGAC |
57.05 |
1:00.14 |
3.09 |
| 3 |
Chan, Hugh (12)
|
MRFLY |
1:02.20 |
1:01.83 |
-0.37 |
| 4 |
O'Sullivan, Tiarnan M (12)
|
MRLGAC |
1:02.24 |
1:02.87 |
0.63 |
| 5 |
Perr, Ryan J (11)
|
MRLGAC |
1:06.67 |
1:05.21 |
-1.46 |
| 6 |
Luczaj, Daniel (12)
|
MRLGAC |
1:19.35 |
1:08.09 |
-11.26 |
| 7 |
Qu, Wesley (12)
|
MRFLY |
1:06.79 |
1:11.06 |
4.27 |
| 8 |
Chen, Aidan (12)
|
MRRED |
1:30.09 |
1:11.15 |
-18.94 |
| 9 |
Tjan, Jaden L (11)
|
MRLGAC |
1:13.01 |
1:11.17 |
-1.84 |
| 10 |
Mei, Jayden (11)
|
MRFLY |
1:17.84 |
1:17.76 |
-0.08 |
| 11 |
Wang, James B (12)
|
MRHYB |
1:24.26 |
1:23.54 |
-0.72 |
| 12 |
Su, Leonardo (11)
|
MRCIY |
1:22.85 |
1:32.05 |
9.20 |
| 13 |
Ramirez, Antonio E (11)
|
MRCIY |
1:37.00 |
1:33.36 |
-3.64 |
| 14 |
Johnson, Matthew (12)
|
MRHYB |
|
1:38.60 |
- |
| 15 |
Soares, Aiden M (12)
|
MRCIY |
2:15.00 |
1:42.72 |
-32.28 |