| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Remick, Kyle J (23)
|
GUMARC |
48.08 |
49.39 |
1.31 |
| 2 |
Seabolt, Daniel S (18)
|
GUMARC |
49.11 |
50.59 |
1.48 |
| 3 |
Lauth, Andrew L (21)
|
GUMARC |
50.62 |
50.69 |
0.07 |
| 4 |
Wang, Eric Y (17)
|
GUBATS |
47.80 |
50.93 |
3.13 |
| 5 |
Barnes, Benjamin N (16)
|
GUBATS |
51.94 |
51.37 |
-0.57 |
| 6 |
Gomez Deleon, Jonathan A (17)
|
GUNOCH |
50.97 |
53.82 |
2.85 |
| 7 |
Coronel, Ruben I (18)
|
GUNOCH |
54.83 |
57.17 |
2.34 |
| 8 |
Becerra, Justin A (15)
|
GUESA |
|
1:03.32 |
- |
| 9 |
Rosacia, Luther (16)
|
GUNOCH |
1:56.81 |
2:08.29 |
11.48 |
|
Bujnowski, Alexander A (17)
|
GUBATS |
49.01 |
NS |
- |
|
Lewis, Miles J (15)
|
GURICE |
|
NS |
- |