| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | COLE, CHANDLER | SO | Marquette High School | NT | Unverified: |
| 3 | WILLIAMS, Wilbert | 9 | McCluer High School | NT | Unverified: |
| 4 | LODHI, REHMAN | JR | Marquette High School | NT | Unverified: |
| 5 | BOWMAN, Cedric | 9 | Riverview Gardens High School | NT | Unverified: |
| 6 | CADE, Tyler | SO | McCluer High School | NT | Unverified: |
| 7 | HOWELL, Joshua | 9 | Francis Howell North High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | MENDEZ, Eric | 9 | Parkway North High School | NT | Unverified: |
| 2 | PERRY, Jahsiah | 9 | Hazelwood East High School | 1:04.45 | Verified |
| 3 | DEJOURNETT, Evan | SO | Notre Dame (Cape Girardeau) High | 1:02.07 | Verified |
| 4 | DRUM, KELLER | 9 | Jackson High School | 1:00.85 | Verified |
| 5 | PORTER, Evan | 9 | Northwest (Cedar Hill) High Scho | 1:01.73 | Verified |
| 6 | CAIN, Logan | SO | Parkway North High School | 1:04.29 | Verified |
| 7 | BIBBS, Jacobie | SO | Riverview Gardens High School | 1:05.71 | Verified |
| 8 | FREEMAN, Joshua | SR | Francis Howell North High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | STERLING, Alex | SO | Jackson High School | 1:00.00 | Unverified: |
| 2 | CHAMBERS, Lenox | SO | Hazelwood Central High School | 59.21 | Verified |
| 3 | VEHIGE, MATTHEW | SO | Lafayette (Wildwood) High School | 58.69 | Verified |
| 4 | STEVENER, Graham | 9 | Kirkwood High School | 56.35 | Verified |
| 5 | REYNOLDS, Tyler | SO | Kirkwood High School | 56.87 | Verified |
| 6 | LANEY, TORRY | 9 | Lafayette (Wildwood) High School | 58.78 | Verified |
| 7 | CAREVIC, Jordan | SO | Parkway West High School | 59.50 | Unverified: |
| 8 | CAMPBELL, Andrew | SO | Northwest (Cedar Hill) High Scho | 1:00.37 | Verified |