| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Bowker, Ryan M (17)
|
MATOPS |
52.61 |
51.99 |
-0.62 |
| 2 |
Keifer, Jacob A (17)
|
MATOPS |
51.08 |
52.14 |
1.06 |
| 3 |
Guiliano, Joseph J (16)
|
MAUN |
49.53 |
52.15 |
2.62 |
| 4 |
Agnew, Patrick M (16)
|
MATOPS |
50.22 |
53.21 |
2.99 |
| 5 |
King, Ryan T (16)
|
MATOPS |
53.12 |
53.90 |
0.78 |
| 6 |
Keifer, Aaron J (16)
|
MATOPS |
55.74 |
54.74 |
-1.00 |
| 7 |
Zimmerman, Nathaniel L (15)
|
MATOPS |
56.54 |
55.98 |
-0.56 |
| 8 |
Lafond, Jack T (16)
|
MAGAAC |
55.55 |
57.30 |
1.75 |
| 9 |
Chettle, Derek A (17)
|
MATRI |
56.17 |
57.83 |
1.66 |
| 10 |
Keagy, Ryan P (15)
|
MAPWAC |
1:02.62 |
1:02.16 |
-0.46 |
| 11 |
Kiddie, Andrew J (15)
|
MAWAP |
1:03.54 |
1:06.60 |
3.06 |
| 12 |
Yanak, Christopher M (17)
|
MAACST |
1:06.52 |
1:09.24 |
2.72 |
| 13 |
Turley, Alexander S (15)
|
MATRI |
1:19.54 |
1:19.49 |
-0.05 |