| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Falcao, Daniel L (10)
|
MRLGAC |
42.56 |
42.77 |
0.21 |
| 2 |
Corelli, Rocco F (10)
|
MRMCBY |
43.59 |
43.19 |
-0.40 |
| 3 |
Zhao, Colin E (10)
|
MRFLY |
|
44.72 |
- |
| 4 |
Hoye, Jonas (10)
|
MRLGAC |
47.82 |
45.79 |
-2.03 |
| 5 |
Chan, Joshua A (10)
|
MRFLY |
49.59 |
45.96 |
-3.63 |
| 6 |
Fiechter, Michael A (9)
|
MRCIY |
50.77 |
46.02 |
-4.75 |
| 7 |
Cordova, Christian M (10)
|
MRCIY |
49.91 |
47.84 |
-2.07 |
| 8 |
Zhuang, Richard (10)
|
MRCIY |
46.28 |
48.18 |
1.90 |
| 9 |
Chang, Steven R (10)
|
MRFLY |
47.56 |
48.51 |
0.95 |
| 10 |
Chariah, Joshua S (7)
|
MRLGAC |
54.52 |
49.49 |
-5.03 |
| 11 |
Dwyer, Daniel P (9)
|
MRCIY |
|
49.58 |
- |
| 12 |
Mountantonakis, Emmanouil S (9)
|
MRFLY |
|
49.75 |
- |
| 13 |
Vasquez, Andrew S (10)
|
MRFLY |
50.48 |
51.33 |
0.85 |
| 14 |
Leung, Lance (9)
|
MRFLY |
|
51.86 |
- |
| 15 |
Haynes, Mark C (9)
|
MRCIY |
55.01 |
53.82 |
-1.19 |
| 16 |
Chang, Matthew A (7)
|
MRFLY |
|
55.89 |
- |
| 17 |
LI, Bryan (8)
|
MRLGAC |
1:08.07 |
59.97 |
-8.10 |
| 18 |
Lee, Joshua (8)
|
MRLGAC |
1:06.75 |
1:02.27 |
-4.48 |
|
Sungrab, Henry T (7)
|
MRLGAC |
1:05.12 |
DQ |
- |
|
Youssef, Mohamed S (9)
|
MRLGAC |
43.02 |
NS |
- |