| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kwon, Connor (10)
|
MRYMID |
44.15 |
45.03 |
0.88 |
| 2 |
Farrell, Callum A (8)
|
MRNYSA |
43.24 |
45.51 |
2.27 |
| 3 |
Ghaly, Yamen (9)
|
MRNYSA |
49.04 |
47.65 |
-1.39 |
| 4 |
Lam, Vernon J (9)
|
MRYBAR |
52.19 |
49.61 |
-2.58 |
| 5 |
Park, Peter J (10)
|
MREAST |
52.36 |
50.00 |
-2.36 |
| 6 |
Mussolini, Nicholas M (9)
|
CTGRYM |
53.69 |
50.64 |
-3.05 |
| 7 |
Chu, Jack (9)
|
MRNYCP |
51.50 |
51.14 |
-0.36 |
| 8 |
Simone, Michael A (10)
|
MRNYSA |
56.45 |
51.96 |
-4.49 |
| 9 |
Corbett, Thomas C (7)
|
MREAST |
57.72 |
52.76 |
-4.96 |
| 10 |
Llorente Valin, Leonardo (10)
|
MRYMID |
56.01 |
56.11 |
0.10 |
| 11 |
Ginste, Charlie W (8)
|
CTGRYM |
55.00 |
56.13 |
1.13 |
| 12 |
Dewhurst, Jesse W (7)
|
MRAG |
59.90 |
58.11 |
-1.79 |
|
Dominick, Connor J (8)
|
MRYMID |
|
DQ |
- |
|
Richardson, Uri A (7)
|
MRNYSA |
|
DQ |
- |
|
Chin, Benjamin P (7)
|
MRNYSA |
|
NS |
- |
|
Tomioka, Jeremiah I (10)
|
MRNYSA |
51.38 |
NS |
- |