| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Chau, Calvin W (16)
|
MRCIY |
31.61 |
29.60 |
-2.01 |
| 2 |
Dwyer, Daniel P (16)
|
MRCIY |
32.57 |
30.89 |
-1.68 |
| 3 |
Lang, Justin Z (17)
|
MRFLY |
|
31.43 |
- |
| 4 |
O'Sullivan, Kealan J (15)
|
MRCIY |
37.04 |
34.13 |
-2.91 |
| 5 |
Lim, Daniel (15)
|
MRFLY |
|
34.46 |
- |
| 6 |
Valdivia, Leonardo A (17)
|
MRFLY |
38.70 |
35.94 |
-2.76 |
| 7 |
Coronado, Justin O (17)
|
MRCIY |
35.90 |
36.15 |
0.25 |
| 8 |
Ou, Toby Y (16)
|
MRFLY |
|
36.95 |
- |
| 9 |
Qian, Ryan E (15)
|
MRCIY |
48.65 |
38.98 |
-9.67 |
| 10 |
Dwyer, Sam M (12)
|
MRCIY |
38.93 |
41.50 |
2.57 |
|
Carrington, Zechariah K (15)
|
MRCIY |
40.81 |
NS |
- |
|
Cordova, Christian M (16)
|
MRCIY |
31.81 |
NS |
- |
|
Lim, James (15)
|
MRFLY |
34.60 |
NS |
- |
|
Lin, Jordan (17)
|
MRFLY |
35.33 |
NS |
- |