| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Chen, Qin-Yan S (10)
|
ADALBS |
59.12 |
48.80 |
-10.32 |
| 2 |
Youmans, Ansel R (9)
|
ADSARY |
56.20 |
52.79 |
-3.41 |
| 3 |
McCarthy, Jigen (10)
|
NESNAP |
|
54.41 |
- |
| 4 |
Frugis, Andrew B (10)
|
ADALBS |
|
54.84 |
- |
| 5 |
Snyder, Oliver A (10)
|
ADSARY |
1:09.20 |
56.05 |
-13.15 |
| 6 |
Steward, Harvey C (9)
|
ADKING |
|
1:02.69 |
- |
|
Shear, Jakob S (9)
|
ADALBS |
|
DQ |
- |
|
Steele, Emmett C (10)
|
ADALBS |
|
DQ |
- |
|
Williams, Tyler J (10)
|
ADALBS |
51.23 |
DQ |
- |
|
Sheppard-Gould, Odysseus S (9)
|
ADHAWK |
|
DQ |
- |
|
Torborg, Benjamin J (10)
|
ADHAWK |
|
DQ |
- |
|
Carroll, Damian E (10)
|
ADSARY |
59.09 |
DQ |
- |
|
Mulholland, Jack O (10)
|
ADSARY |
1:01.70 |
DQ |
- |
|
Zorn, Daniel Y (9)
|
ADSARY |
51.29 |
DQ |
- |
|
Dorsey, Marshall L (10)
|
ADALBS |
1:04.06 |
NS |
- |
|
Dixon, Patrick (10)
|
NESNAP |
1:12.22 |
NS |
- |