| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Barrett, Noah D (12)
|
MRYMID |
29.35 |
29.20 |
-0.15 |
| 2 |
Stoica, Michael (12)
|
MRYMID |
31.42 |
29.87 |
-1.55 |
| 3 |
Liang, Xiaochuan L (12)
|
MRBGNW |
32.81 |
30.59 |
-2.22 |
| 4 |
Terri, Kyle D (12)
|
MRYMID |
31.41 |
31.54 |
0.13 |
| 5 |
Elliott, Chase J (11)
|
CTZEUS |
31.37 |
31.77 |
0.40 |
| 6 |
Kurachenkov, Nicolas (12)
|
MRLIAC |
33.53 |
33.98 |
0.45 |
| 7 |
Camille, Sebastian R (11)
|
CTZEUS |
35.04 |
34.19 |
-0.85 |
| 8 |
Fu, Warren (11)
|
MRBGNW |
40.87 |
35.74 |
-5.13 |
| 9 |
Canning, Terence P (11)
|
MRLIAC |
44.00 |
38.73 |
-5.27 |
| 10 |
Pinnock, Alex L (11)
|
MRUN |
37.58 |
39.20 |
1.62 |
| 11 |
Esposito, Dylan H (12)
|
MRBGNW |
39.87 |
40.11 |
0.24 |
| 12 |
Garcia, Daniel (11)
|
MRLIAC |
50.00 |
40.98 |
-9.02 |
| 13 |
Martins, Aston A (11)
|
MRUN |
|
41.43 |
- |
| 14 |
Halloran, Tae C (11)
|
MRLIAC |
50.00 |
43.14 |
-6.86 |
| 15 |
Fabbri Purwin, Bernardo (11)
|
MRSMC |
48.37 |
44.79 |
-3.58 |
|
Santos, Matthew D (11)
|
MRLIAC |
50.92 |
DQ |
- |
|
Weiss, Elliott M (11)
|
MRYFD |
59.48 |
DQ |
- |