Section 1 of 2
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | ABEL, Dennis | FR | Riverview Gardens High School | 56.85 | Unverified: PARKWAY NORTH |
| 2 | MAYER, Steffan | SO | St. Louis University High School | 56.50 | Unverified: |
| 3 | SMITH, Tim | SR | Christian Brothers College High | 51.93 | Verified |
| 4 | ROXAS, Matthew | JR | Priory High School | 56.00 | Verified |
| 5 | JONES, Nathan | SR | Kirkwood High School | 56.52 | Verified |
| 6 | KEY, Jonny | JR | Seckman High School | 57.00 | Unverified: |
Section 2 of 2
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | COOK, Trey | SO | KIPP St. Louis | NT | Unverified: |
| 2 | BRADLEY, JOSEPH | SO | Oakville High School | 1:02.80 | Verified |
| 3 | HADLOW, Seth | SR | Chaminade College Preparatory Sc | NT | |
| 4 | SHARP, Christopher | SO | DeSmet Jesuit High School | 59.10 | Unverified: |
| 5 | ASH, Cody | SR | Northwest (Cedar Hill) High Scho | 1:03.20 | Verified |
