| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sislen, Leonardo S (9)
|
PVNCAP |
45.37 |
44.58 |
-0.79 |
| 2 |
Sehgal, Xander (10)
|
PVDCPR |
44.59 |
44.65 |
0.06 |
| 3 |
Mara, Josua D (10)
|
PVNCAP |
48.27 |
45.12 |
-3.15 |
| 4 |
Davis Jr., Michael D (10)
|
PVDCPR |
48.73 |
46.88 |
-1.85 |
| 5 |
Om, Tyler (10)
|
PVMAC |
46.38 |
47.38 |
1.00 |
| 6 |
Kim, Phillip H (9)
|
PVMAC |
48.50 |
48.15 |
-0.35 |
| 7 |
Wilkins, Zachary T (10)
|
PVNCAP |
49.71 |
48.21 |
-1.50 |
| 8 |
Lav, Naveh (10)
|
PVDCPR |
50.94 |
48.34 |
-2.60 |
| 9 |
Catanzano, Max A (10)
|
PVDCPR |
47.70 |
50.12 |
2.42 |
| 10 |
Velasquez, Sebastian G (10)
|
PVDCPR |
|
50.30 |
- |
| 11 |
Barbour, Alexander F (9)
|
PVNCAP |
|
51.98 |
- |
| 12 |
Om, Ethan (9)
|
PVMAC |
59.51 |
57.40 |
-2.11 |
|
Erinle, Oluwadurotimi (10)
|
PVPGPR |
|
DQ |
- |
|
Lam, Tristan C (9)
|
PVDCPR |
1:05.87 |
NS |
- |
|
Steele, Isaiah J (10)
|
PVPGPR |
|
NS |
- |