| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kamal, Adam (7)
|
MRBGNW |
48.36 |
48.67 |
0.31 |
| 2 |
Furniss, Jameson R (8)
|
MRBGNW |
49.37 |
50.13 |
0.76 |
| 3 |
Moy, Aiden C (8)
|
MREAST |
48.18 |
50.44 |
2.26 |
| 4 |
Malik, Vivek (8)
|
MRBGNW |
51.06 |
51.21 |
0.15 |
| 5 |
Ladyzhensky, Michael A (8)
|
MRBAD |
50.99 |
52.24 |
1.25 |
| 6 |
Del Rosario, Edmund Jacob C (8)
|
MRPATS |
57.89 |
54.27 |
-3.62 |
| 7 |
Cai, Jason (8)
|
MRBGNW |
54.12 |
54.39 |
0.27 |
| 8 |
McDonald, Ryan J (7)
|
MRBAD |
53.48 |
55.44 |
1.96 |
| 9 |
Hsu, Kevin (8)
|
MRTS |
54.82 |
55.68 |
0.86 |
| 10 |
Ji, Edward * (8)
|
MRTS |
1:01.90 |
59.55 |
-2.35 |
| 11 |
Smith, Brady R (8)
|
MRBAD |
|
1:01.65 |
- |
| 12 |
DuTremble, James P (8)
|
MREAST |
1:02.80 |
1:03.01 |
0.21 |
| 13 |
Farrell, Callum A (7)
|
MRNYSA |
1:00.11 |
1:03.70 |
3.59 |
| 14 |
Balcetis, Jonas (7)
|
MRBGNW |
|
1:04.72 |
- |
| 15 |
Brown, Lucas K (8)
|
MRTS |
57.95 |
1:06.36 |
8.41 |
| 16 |
Kolev, Maximilian D (8)
|
MRBGNW |
|
1:07.87 |
- |
| 17 |
Vincent, Michael R (8)
|
MRBAD |
1:06.16 |
1:08.72 |
2.56 |
| 18 |
Xue, Henry (6)
|
MRBGNW |
1:13.38 |
1:13.81 |
0.43 |
| 19 |
Christidis, Alexandros W (7)
|
MRPATS |
|
1:14.30 |
- |
|
Vezzi, James * (7)
|
MRTS |
1:16.95 |
DQ |
- |
|
Loveless, Ryan (8)
|
MRBAD |
|
DQ |
- |
|
Hussain, Danyaal S (7)
|
MRBGNW |
|
NS |
- |