| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Camacho, Antonio M (10)
|
MDYCM |
44.45 |
44.47 |
0.02 |
| 2 |
Jaeger, Billy J (10)
|
MDASC |
46.64 |
45.35 |
-1.29 |
| 3 |
Yang, Arthur Z (10)
|
MDYCM |
49.47 |
46.55 |
-2.92 |
| 4 |
Doyle, Jason A (10)
|
MDYCM |
50.60 |
47.07 |
-3.53 |
| 5 |
Williamson, Marcus N (10)
|
MDHOCO |
|
47.16 |
- |
| 6 |
Sinha, Rohan K (10)
|
MDYCM |
|
48.27 |
- |
| 7 |
Meek, Mason B (10)
|
MDYCM |
45.58 |
48.52 |
2.94 |
| 8 |
Hinz, Mason J (10)
|
MDYCM |
49.77 |
49.60 |
-0.17 |
| 9 |
Lavin, Colin P (10)
|
MDMSC |
|
49.70 |
- |
| 10 |
Wangdahl, Nathaniel M (10)
|
MDBVA |
1:00.61 |
53.12 |
-7.49 |
| 11 |
Uleckas-Meisinger, Anton J (10)
|
MDBVA |
|
55.23 |
- |
| 12 |
Grube, Everett M (10)
|
MDCBAC |
1:00.66 |
1:01.61 |
0.95 |
| 13 |
Perez-Ambrosio, Jose D (10)
|
MDYCM |
|
1:02.94 |
- |
| 14 |
Stanco, David M (10)
|
MDMSC |
|
1:10.04 |
- |
|
Sakai, Tadashi (10)
|
MDASC |
|
DQ |
- |
|
McGrath, Zachary M (10)
|
MDBVA |
|
DQ |
- |
|
Seward, Theodore J (10)
|
MDMSC |
49.73 |
NS |
- |
|
Yarlott, Joseph A (10)
|
MDYCM |
50.77 |
NS |
- |