| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Chan, Hugh (12)
|
MRFLY |
34.07 |
33.11 |
-0.96 |
| 2 |
Qu, Sirui (12)
|
MRFLY |
36.66 |
35.74 |
-0.92 |
| 3 |
Perr, Ryan J (11)
|
MRLGAC |
40.33 |
37.84 |
-2.49 |
| 4 |
Lyashchenko, Serge S (12)
|
MRLGAC |
41.68 |
39.23 |
-2.45 |
| 5 |
Qu, Wesley (12)
|
MRFLY |
42.61 |
39.31 |
-3.30 |
| 6 |
Ratling, Phuntsok W (12)
|
MRLGAC |
41.07 |
39.95 |
-1.12 |
| 7 |
Luczaj, Daniel (12)
|
MRLGAC |
50.76 |
40.74 |
-10.02 |
| 8 |
Coquinco, Nicholas D (11)
|
MRCIY |
41.80 |
40.96 |
-0.84 |
| 9 |
Tjan, Jaden L (11)
|
MRLGAC |
44.54 |
42.51 |
-2.03 |
| 10 |
Pietruszka, Bartosz (11)
|
MRLGAC |
40.06 |
42.68 |
2.62 |
| 11 |
Mei, Jayden (11)
|
MRFLY |
45.17 |
43.63 |
-1.54 |
| 12 |
Aouchiche, Adam S (11)
|
MRFLY |
42.87 |
43.75 |
0.88 |
| 13 |
Shim, Peter W (11)
|
MRFLY |
46.98 |
44.75 |
-2.23 |
| 14 |
Kapala, Kacper L (12)
|
MRLGAC |
53.13 |
46.35 |
-6.78 |
| 15 |
Fong, Branden (12)
|
MRLGAC |
55.69 |
46.49 |
-9.20 |
| 16 |
Thakur, Jasper (11)
|
MRFLY |
49.97 |
47.31 |
-2.66 |
| 17 |
Chen, Samuel (11)
|
MRLGAC |
51.63 |
47.73 |
-3.90 |
| 18 |
Huang, Bill (11)
|
MRFLY |
52.37 |
48.54 |
-3.83 |
|
Su, Leonardo (11)
|
MRCIY |
1:00.62 |
DQ |
- |
|
Soares, Aiden M (12)
|
MRCIY |
55.81 |
DQ |
- |
|
Yang, Austin (12)
|
MRFLY |
|
NS |
- |