| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Feliciano, Gabriel A (10)
|
MABLUE |
47.92 |
43.05 |
-4.87 |
| 2 |
Popat, Om B (10)
|
MAGAAC |
51.28 |
46.72 |
-4.56 |
| 3 |
Schmitt, Liam B (10)
|
MAUDAC |
48.11 |
47.11 |
-1.00 |
| 4 |
Cedeno, Enzo Raphael B (10)
|
MAGPAC |
47.93 |
47.40 |
-0.53 |
| 5 |
Wong, Jayden (10)
|
MAPSC |
52.93 |
49.36 |
-3.57 |
| 6 |
Ostrowski, Michael L (10)
|
MABLUE |
49.80 |
51.57 |
1.77 |
| 7 |
Coleman, Joseph J (10)
|
MANAC |
1:00.48 |
54.76 |
-5.72 |
| 8 |
Silipino, Peter F (10)
|
MASTRM |
55.44 |
56.39 |
0.95 |
| 9 |
Brock, Graham P (10)
|
MABWA |
55.33 |
57.24 |
1.91 |
| 10 |
LaRussa, Evan T (10)
|
MAEMAC |
59.08 |
59.46 |
0.38 |
| 11 |
Williams, Caleb C (10)
|
MABWA |
1:01.09 |
1:06.05 |
4.96 |
|
Baldino, Alexander J (10)
|
MASSC |
1:04.67 |
DQ |
- |
|
Chorba, Michael T (10)
|
MANAC |
1:01.26 |
NS |
- |
|
Fogerty, Duncan J (10)
|
MASJAC |
53.85 |
NS |
- |
|
XU, Jerry (10)
|
MASJAC |
56.65 |
NS |
- |
|
Rubin, Alexander J (10)
|
MAUDAC |
54.72 |
NS |
- |