| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gray, Matthew J (14)
|
MARAD |
54.48 |
52.52 |
-1.96 |
| 2 |
Naessig, Christopher (14)
|
MAPVAC |
53.39 |
55.28 |
1.89 |
| 3 |
Casey, Patrick (14)
|
MARAD |
56.88 |
55.81 |
-1.07 |
| 4 |
Pawlow, Matthew C (13)
|
MARAD |
1:01.23 |
57.26 |
-3.97 |
| 5 |
Cosgrove, Rhett A (13)
|
MARAD |
1:02.17 |
59.59 |
-2.58 |
| 6 |
Kapaj, Kleidi (13)
|
MATRI |
1:00.52 |
1:00.76 |
0.24 |
| 7 |
Bentley, Chase A (13)
|
MATRI |
1:03.14 |
1:00.89 |
-2.25 |
| 8 |
Mlodzienski, Leo (14)
|
MARAD |
1:00.43 |
1:00.90 |
0.47 |
| 9 |
Wittmer, Christopher J (13)
|
MAGSA |
1:09.73 |
1:03.29 |
-6.44 |
| 10 |
McDonough, Ryan D (13)
|
MAUN! |
1:07.11 |
1:05.01 |
-2.10 |
| 11 |
Duffy, Phillip J (13)
|
MARAD |
|
1:05.12 |
- |
| 12 |
Patterson, Sam O (13)
|
MARAD |
1:08.95 |
1:05.71 |
-3.24 |
| 13 |
Kellerman, Nathan J (13)
|
MARAD |
1:08.15 |
1:06.35 |
-1.80 |
| 14 |
Rocheleau, Michael D (13)
|
MARAD |
|
1:08.62 |
- |
| 15 |
Movsowitz, Ryan B (13)
|
MARAD |
1:10.06 |
1:09.01 |
-1.05 |
| 16 |
Slate, Gavin D (13)
|
MARAD |
|
1:10.37 |
- |
| 17 |
Scott, Aidan J (13)
|
MARAD |
1:13.35 |
1:12.59 |
-0.76 |
|
Hu, Junbo (14)
|
MARAD |
|
NS |
- |