| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Chau, Calvin W (16)
|
MRCIY |
58.60 |
57.37 |
-1.23 |
| 2 |
Dwyer, Daniel P (16)
|
MRCIY |
1:04.66 |
59.39 |
-5.27 |
| 3 |
O'Sullivan, Kealan J (15)
|
MRCIY |
1:07.69 |
1:03.31 |
-4.38 |
| 4 |
Coronado, Justin O (17)
|
MRCIY |
1:03.88 |
1:04.09 |
0.21 |
| 5 |
Ou, Toby Y (16)
|
MRFLY |
|
1:05.44 |
- |
| 6 |
Valdivia, Leonardo A (17)
|
MRFLY |
1:13.79 |
1:07.76 |
-6.03 |
| 7 |
Lim, Daniel (15)
|
MRFLY |
|
1:12.97 |
- |
|
Cordova, Christian M (16)
|
MRCIY |
1:01.22 |
NS |
- |
|
Dwyer, Sam M (12)
|
MRCIY |
1:26.25 |
NS |
- |
|
Lang, Justin Z (17)
|
MRFLY |
|
NS |
- |
|
Lim, James (15)
|
MRFLY |
1:04.96 |
NS |
- |
|
Lin, Jordan (17)
|
MRFLY |
1:10.74 |
NS |
- |