| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gray, Matthew J (16)
|
MARAD |
55.12 |
55.91 |
0.79 |
| 2 |
Hoffman, Leif (15)
|
MAUN |
56.58 |
58.34 |
1.76 |
| 3 |
Bentley, Chase A (15)
|
MARAD |
1:01.45 |
59.92 |
-1.53 |
| 4 |
Casey, Patrick (16)
|
MARAD |
1:06.62 |
1:05.59 |
-1.03 |
| 5 |
Menasion, Miles V (15)
|
MAUN |
|
1:08.09 |
- |
| 6 |
Glancey, Dennis (16)
|
MATRI |
|
1:10.01 |
- |
| 7 |
Duffy, Phillip J (15)
|
MARAD |
1:07.36 |
1:13.97 |
6.61 |
| 8 |
Pergolis, Nicholas P (15)
|
MARAD |
|
1:26.41 |
- |
|
Olmstead, Luke N (15)
|
MALYM |
|
DQ |
- |
|
Kellerman, Nathan J (15)
|
MARAD |
1:16.06 |
NS |
- |
|
Octaviano, Antonio T (17)
|
MARAD |
55.13 |
NS |
- |
|
Thomas, Williams E (17)
|
MARAD |
1:08.26 |
NS |
- |