| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Yaglenski, Thomas I (16)
|
MAUDAC |
|
51.27 |
- |
| 2 |
Mahler, Adam P (17)
|
MAUN |
50.11 |
53.79 |
3.68 |
| 3 |
Han, Daniel (17)
|
MACBST |
53.86 |
54.19 |
0.33 |
| 4 |
Khayt, Tomer (16)
|
MACBST |
55.92 |
55.32 |
-0.60 |
| 5 |
Mignogna, Zachary P (15)
|
MAHHAA |
52.96 |
55.91 |
2.95 |
| 6 |
Patti, Alexander J (16)
|
MACBST |
56.55 |
58.37 |
1.82 |
| 7 |
Komita, Benjamin L (17)
|
MACBST |
|
58.74 |
- |
| 8 |
Vidal, Patrick A (15)
|
MACBST |
58.33 |
58.95 |
0.62 |
| 9 |
McClurkin, Alexander (15)
|
MACORE |
58.72 |
1:00.00 |
1.28 |
| 10 |
Sumner, Stuart R (17)
|
MACBST |
55.00 |
1:00.31 |
5.31 |
| 11 |
Cervantes-Rodriguez, Jorge L (16)
|
MACBST |
1:00.73 |
1:00.32 |
-0.41 |
| 12 |
McElrath, Jeffery (17)
|
MACBFY |
1:02.92 |
1:01.70 |
-1.22 |
| 13 |
Lenahan, Connor D (16)
|
MACBST |
1:01.15 |
1:01.84 |
0.69 |
| 14 |
Baldino, Tyler J (15)
|
MASSC |
|
1:03.31 |
- |
| 15 |
Wallace, Cameron J (15)
|
MACBST |
1:06.29 |
1:04.62 |
-1.67 |
| 16 |
Kuo, Ian Y (17)
|
MACBST |
1:01.92 |
1:05.03 |
3.11 |
| 17 |
Parkhill, Evan N (16)
|
MACBST |
|
1:08.47 |
- |