| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Halls, Ryan A (10)
|
MRNFS |
42.92 |
42.57 |
-0.35 |
| 2 |
Singer, Dillon T (10)
|
MRFREE |
44.17 |
42.58 |
-1.59 |
| 3 |
Augustin, James J (10)
|
MRFA |
43.94 |
42.68 |
-1.26 |
| 4 |
Kan, Winston C (10)
|
MRFREE |
53.99 |
47.03 |
-6.96 |
| 5 |
Temni, Matthew (8)
|
MRFREE |
48.99 |
49.80 |
0.81 |
| 6 |
Tuminello, Nicholas S (9)
|
MRFREE |
49.71 |
50.81 |
1.10 |
| 7 |
Pfaffe, Parker T (8)
|
MRIA |
1:00.49 |
57.12 |
-3.37 |
| 8 |
Clark, Colin S (9)
|
MRIA |
1:00.00 |
58.88 |
-1.12 |
| 9 |
Carew, Christopher D (9)
|
MRIA |
1:00.00 |
59.58 |
-0.42 |
| 10 |
Wojciechowski, Nicholas (7)
|
MRIA |
1:00.00 |
1:01.14 |
1.14 |
| 11 |
Eng, Ethan M (8)
|
MRFA |
1:01.99 |
1:07.09 |
5.10 |
| 12 |
O'Reilly, Desmond L (8)
|
MRIA |
1:15.90 |
1:07.14 |
-8.76 |