| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Wilson, Edmund (16)
|
MRRFAC |
49.47 |
51.87 |
2.40 |
| 2 |
Abbruzzese, Matthew J (16)
|
MRPATS |
51.19 |
51.94 |
0.75 |
| 3 |
Landgraf, Tim A (17)
|
MRRFAC |
52.15 |
51.98 |
-0.17 |
| 4 |
Zhou, York Z (15)
|
MRPATS |
53.62 |
52.27 |
-1.35 |
| 5 |
Button, Samuel M (15)
|
MRRFAC |
53.80 |
54.73 |
0.93 |
| 6 |
Lam, Vernon J (14)
|
MRYBAR |
55.43 |
55.22 |
-0.21 |
| 7 |
Cooper, Jackson C (15)
|
MRNBS |
53.32 |
55.35 |
2.03 |
| 8 |
Reade, Angelo R (16)
|
MRNBS |
53.68 |
57.81 |
4.13 |
| 9 |
Pagano, Jax A (15)
|
MRNBS |
59.09 |
58.66 |
-0.43 |
| 10 |
Frankl, Erik A (13)
|
MRNBS |
1:10.70 |
1:05.48 |
-5.22 |
| 11 |
Constancio, Markus A (15)
|
MRNBS |
1:08.24 |
1:07.57 |
-0.67 |
| 12 |
Britto, Joseph E (15)
|
MRYBAR |
1:20.89 |
1:07.79 |
-13.10 |
| 13 |
Baxter, Liam M (14)
|
MRNBS |
1:09.08 |
1:10.07 |
0.99 |
| 14 |
Pagano, Jesse K (13)
|
MRNBS |
1:15.69 |
1:11.42 |
-4.27 |
| 15 |
Corrado, John Caleb E (13)
|
MRMWDA |
1:16.40 |
1:18.07 |
1.67 |