| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Skaistis, Levi B (7)
|
MRAGUA |
47.14 |
39.44 |
-7.70 |
| 2 |
Ladyzhensky, Michael A (8)
|
MRBAD |
39.99 |
43.73 |
3.74 |
| 3 |
Jones, Jake F (8)
|
MRAGUA |
42.71 |
47.06 |
4.35 |
| 4 |
Burg, Daniel B (8)
|
MRAGUA |
54.73 |
49.90 |
-4.83 |
| 5 |
Milgram, Mark A (8)
|
MRUN |
55.97 |
51.58 |
-4.39 |
| 6 |
Chan, Beau (8)
|
MRMAKO |
|
51.66 |
- |
| 7 |
Brown, Thomas J (8)
|
MRSMC |
53.55 |
52.50 |
-1.05 |
| 8 |
Usina, Vuk (8)
|
MRMAKO |
59.45 |
53.18 |
-6.27 |
| 9 |
Fagelman-Walker, Jake K (8)
|
MRAGUA |
|
56.66 |
- |
|
Gonzalez, Andres (8)
|
MRMAKO |
|
DQ |
- |
|
Mitchener, Connor (8)
|
MRMAKO |
|
DQ |
- |
|
Smith, Harrison (8)
|
MRMAKO |
|
DQ |
- |
|
Biondolillo, Luigi (8)
|
MRWAC |
1:00.00 |
DQ |
- |
|
Gookin, Vincent C (7)
|
MRAGUA |
|
NS |
- |
|
Payne, William M (8)
|
MRRA |
1:15.00 |
NS |
- |