| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Mackellar, Colin S (16)
|
CTPAC |
50.71 |
48.54 |
-2.17 |
| 2 |
Shemet, Henry M (16)
|
MRTVSC |
49.00 |
48.73 |
-0.27 |
| 3 |
Bushnell, Christopher C (17)
|
NISYCH |
|
49.54 |
- |
| 4 |
Zifra, Bradley R (19)
|
NIEAST |
59.40 |
50.04 |
-9.36 |
| 5 |
Boyd, Isaac M (16)
|
NEPVA |
53.72 |
50.79 |
-2.93 |
| 6 |
Herr, William A (14)
|
NIEAST |
51.50 |
51.23 |
-0.27 |
| 7 |
Lai, Leon (17)
|
MRAGUA |
50.48 |
51.58 |
1.10 |
| 8 |
Winkelman, Luke T (17)
|
NJTAC |
50.43 |
51.67 |
1.24 |
| 9 |
Young, Justin E (16)
|
NJBB |
51.00 |
52.03 |
1.03 |
| 10 |
Johnson, Luke B (18)
|
NEWACK |
|
52.33 |
- |
| 11 |
Michenfelder, Matthew W (16)
|
NJSRAY |
54.25 |
53.64 |
-0.61 |
|
Ng, Evan (18)
|
NJSCAR |
52.50 |
NS |
- |