| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lee, Thirachon G (11)
|
MRLGAC |
27.66 |
28.18 |
0.52 |
| 2 |
Shao, Aiden (11)
|
MRFLY |
30.55 |
31.68 |
1.13 |
| 3 |
Shim, Peter W (12)
|
MRFLY |
32.10 |
33.01 |
0.91 |
| 4 |
Liu, Ziyuan (12)
|
MRLGAC |
34.65 |
34.03 |
-0.62 |
| 5 |
Gonzalez-Chang, Ian (12)
|
MRCENT |
41.65 |
34.64 |
-7.01 |
| 6 |
Lyashchenko, Alexander S (11)
|
MRLGAC |
35.11 |
36.05 |
0.94 |
| 7 |
Soeda, Hiroki (12)
|
MRCENT |
36.29 |
36.85 |
0.56 |
| 8 |
Aguilar, Emiliano (12)
|
MRRED |
37.50 |
37.13 |
-0.37 |
| 9 |
Prada, Isaac (11)
|
MRFLY |
40.24 |
40.73 |
0.49 |
| 10 |
Kharazishvili, Jason (12)
|
MRCENT |
44.57 |
40.99 |
-3.58 |
| 11 |
Xochicale, Ryan N (11)
|
MRLGAC |
43.80 |
43.90 |
0.10 |
| 12 |
Santiago-Otero, Jonathys E (11)
|
MRKBM |
45.96 |
44.14 |
-1.82 |
| 13 |
Dorjee, Kunga (12)
|
MRLGAC |
46.16 |
44.53 |
-1.63 |
| 14 |
Guo, Owen (11)
|
MRFLY |
44.86 |
45.26 |
0.40 |
| 15 |
Peng, Klayton (12)
|
MRCENT |
1:15.67 |
47.37 |
-28.30 |
| 16 |
Zhang, Austin (11)
|
MRCENT |
47.51 |
47.56 |
0.05 |
| 17 |
Hartman, Michael (11)
|
MRCENT |
1:05.92 |
53.51 |
-12.41 |
| 18 |
Sun, Jerry (11)
|
MRCENT |
29.07 |
54.30 |
25.23 |
| 19 |
Garica, Neisten J (12)
|
MRKBM |
54.68 |
55.39 |
0.71 |
|
Rafailov, Liam (12)
|
MRCENT |
1:15.70 |
DQ |
- |
|
Corcuera, Christopher (12)
|
MRLGAC |
32.36 |
NS |
- |