| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Reiff, Julian J (8)
|
CTGYWD |
48.52 |
49.86 |
1.34 |
| 2 |
Rutherford, William J (8)
|
MRSMC |
50.93 |
50.60 |
-0.33 |
| 3 |
King, Liam G (7)
|
MRSMC |
56.29 |
55.49 |
-0.80 |
| 4 |
Aikman, Giles R (7)
|
MRYMID |
58.23 |
56.00 |
-2.23 |
| 5 |
Criscillo, Michael V (8)
|
MRGAEL |
|
56.58 |
- |
| 6 |
Sahi, Maximus Sandeep L (8)
|
MRGAEL |
1:01.31 |
56.60 |
-4.71 |
| 7 |
Scherich, Oliver S (8)
|
MRRA |
1:25.00 |
1:02.89 |
-22.11 |
| 8 |
Scherich, Elliot H (8)
|
MRRA |
1:25.00 |
1:03.46 |
-21.54 |
| 9 |
Fisher, Mason H (7)
|
MRYMID |
|
1:18.24 |
- |
|
Miner, Jack W (8)
|
MRGAEL |
|
DQ |
- |
|
Oxendine, Wiley M (7)
|
MRGAEL |
|
DQ |
- |
|
Battaglia, Matthew E (8)
|
MRRA |
1:35.00 |
DQ |
- |
|
Roche, Andrew (8)
|
MRRA |
1:11.29 |
NS |
- |