| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Diaz, Adam C (16)
|
MRRED |
52.91 |
50.86 |
-2.05 |
| 2 |
Salimbeni, Marco J (17)
|
MRRED |
54.17 |
52.06 |
-2.11 |
| 3 |
Leroy, Max (15)
|
MRHYB |
53.38 |
53.20 |
-0.18 |
| 4 |
O'Sullivan, Kealan J (16)
|
MRCIY |
52.83 |
53.56 |
0.73 |
| 5 |
Degregorio, Christopher C (17)
|
MRHYB |
55.20 |
54.23 |
-0.97 |
| 6 |
Ou, Toby Y (17)
|
MRFLY |
54.64 |
55.60 |
0.96 |
| 7 |
Spagnoletti, Evan (17)
|
MRHYB |
49.06 |
55.75 |
6.69 |
| 8 |
Milien, Jeremiah E (16)
|
MRFLY |
1:03.95 |
1:01.18 |
-2.77 |
| 9 |
Dwyer, Sam M (13)
|
MRCIY |
55.40 |
1:04.64 |
9.24 |
| 10 |
Gomaa, Marwan (15)
|
MRFLY |
|
1:07.12 |
- |
| 11 |
Leonard, Gabriel D (15)
|
MRFLY |
1:08.22 |
1:08.74 |
0.52 |
| 12 |
Kelly, Thomas C (15)
|
MRFLY |
1:12.71 |
1:09.12 |
-3.59 |
|
Spagnoletti, Lucas (16)
|
MRHYB |
52.53 |
NS |
- |