| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lopez, Joseph G (11)
|
MRAPEX |
46.05 |
46.71 |
0.66 |
| 2 |
Koufalis, Konstantinos (11)
|
MRBAD |
45.13 |
47.31 |
2.18 |
| 3 |
Ogaki, Keisuke (10)
|
MRYMID |
46.02 |
47.34 |
1.32 |
| 4 |
Hyndman, Nathaniel M (11)
|
MRHES |
52.22 |
51.35 |
-0.87 |
| 5 |
Loveless, Ryan (10)
|
MRBAD |
50.72 |
52.28 |
1.56 |
| 6 |
Korsakov, Pavel (11)
|
MRASAP |
54.42 |
52.81 |
-1.61 |
| 7 |
King, Anthony S (11)
|
MRHES |
50.37 |
53.26 |
2.89 |
| 8 |
Robins, Benjamin I (10)
|
MRBAD |
49.70 |
53.41 |
3.71 |
| 9 |
Brillante, Francesco A (11)
|
MRHES |
53.11 |
55.09 |
1.98 |
| 10 |
Gorelik, Lev (10)
|
MRASAP |
52.73 |
56.34 |
3.61 |
| 11 |
Korsakov, Ivan (11)
|
MRASAP |
57.94 |
57.54 |
-0.40 |
| 12 |
Hill, Kai B (9)
|
MRBAD |
56.86 |
58.57 |
1.71 |
| 13 |
Korytny, Alan (10)
|
MRHES |
56.92 |
59.53 |
2.61 |
| 14 |
Barrett, Noland A (8)
|
MRYMID |
1:00.93 |
1:02.04 |
1.11 |
| 15 |
Dominick, Connor J (9)
|
MRYMID |
1:08.44 |
1:02.20 |
-6.24 |
| 16 |
Soviero, William G (11)
|
MRBAD |
58.19 |
1:02.50 |
4.31 |
| 17 |
Markarian, Ashot (7)
|
MRYMID |
|
1:03.84 |
- |
| 18 |
Park, Noah (9)
|
MRASAP |
1:24.40 |
1:08.91 |
-15.49 |
| 19 |
Gibson, Timothy R (7)
|
MRHES |
1:33.50 |
1:18.80 |
-14.70 |
| 20 |
Lo Verde, Leonardo (7)
|
MRHES |
1:12.67 |
1:24.20 |
11.53 |
|
Deguzman, Michael (8)
|
MRHES |
1:50.00 |
DQ |
- |
|
Zhang, Tony (11)
|
MRBAD |
|
NS |
- |
|
Xia, Qijun (9)
|
MRBAD |
|
NS |
- |