| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lee, Christian (16)
|
MRBAD |
53.05 |
53.54 |
0.49 |
| 2 |
Pastore, James V (17)
|
MRBGNW |
52.12 |
54.55 |
2.43 |
| 3 |
Egan, Kieran R (15)
|
MRBAD |
54.67 |
56.13 |
1.46 |
| 4 |
Veru, Theodore P (16)
|
MRBAD |
54.91 |
57.57 |
2.66 |
| 5 |
Barry, Christopher M (16)
|
MRUN |
|
57.75 |
- |
| 6 |
Norris, Timothy M (17)
|
MRBAD |
54.57 |
58.19 |
3.62 |
| 7 |
McHugh, Connor J (13)
|
MRBGNW |
1:01.63 |
58.40 |
-3.23 |
| 8 |
Nack, Adam N (16)
|
MRBGNW |
1:00.69 |
59.50 |
-1.19 |
| 9 |
O'Donnell, Michael W (15)
|
MRBGNW |
1:01.50 |
1:04.15 |
2.65 |
| 10 |
Lynch, Jamie M (15)
|
MRBGNW |
1:10.06 |
1:05.20 |
-4.86 |
| 11 |
Gulotta, Lawrence J (14)
|
MRBGNW |
1:08.33 |
1:08.19 |
-0.14 |