| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Deguzman, Anthony William A (10)
|
MRHES |
50.60 |
43.72 |
-6.88 |
| 1 |
Chasabenis, Vasili A (10)
|
MRHS |
44.92 |
45.13 |
0.21 |
| 2 |
Geller, Russell (10)
|
MRWAC |
46.24 |
46.35 |
0.11 |
| 3 |
Munoz- Solano, John A (10)
|
MRRED |
52.02 |
47.20 |
-4.82 |
| 4 |
Mina, Victor S (10)
|
MRRED |
47.21 |
48.18 |
0.97 |
| 5 |
Weisburg, Alexander L (9)
|
MRAPEX |
45.43 |
48.36 |
2.93 |
| 6 |
Diaz, Adam C (9)
|
MRRED |
51.97 |
48.48 |
-3.49 |
| 7 |
Karinsky, Parker (9)
|
MRHES |
54.08 |
48.76 |
-5.32 |
| 8 |
Sucher, Mattias (9)
|
MRMAKO |
49.27 |
50.83 |
1.56 |
| 9 |
Yi, Ethan (9)
|
MRMAKO |
53.35 |
52.14 |
-1.21 |
| 10 |
MacDonald, Kaan (9)
|
MRMAKO |
54.10 |
53.07 |
-1.03 |
| 11 |
Wilson, Chase (10)
|
MRMAKO |
1:01.99 |
53.66 |
-8.33 |
| 12 |
Nieves, Jayden A (10)
|
MRCAS |
52.50 |
54.87 |
2.37 |
| 13 |
Gutman, Ilan B (9)
|
MRHES |
53.69 |
55.34 |
1.65 |
| 14 |
Shih, Lucien (9)
|
MRMAKO |
1:06.40 |
56.93 |
-9.47 |
| 15 |
Leonard, Kiel J (9)
|
MRAPEX |
1:02.88 |
1:04.42 |
1.54 |
|
Wang, Robert Y (9)
|
MRAPEX |
52.82 |
DQ |
- |