| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | WHEATON, Victor | JR | Lindbergh High School | NT | Unverified: |
| 4 | JACKSON, Andrew | JR | Parkway Central High School | NT | Unverified: |
| 5 | STRONG, Cameron | 7 | Christian Brothers College High | NT | Unverified: |
| 6 | HODGES, Jacob | FR | Rolla High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | HAHN, Daniel | SR | Webster Groves High School | NT | Unverified: |
| 2 | NGUYEN, Trung | JR | Mehlville High School | 58.36 | Verified |
| 3 | WASHINGTON, Elijah | FR | Christian Brothers College High | 54.00 | Unverified: |
| 4 | MILLER, Michael | SO | Ritenour High School | 52.72 | Verified |
| 5 | MASEK, JACOB | SR | Eureka High School | 52.78 | Unverified: |
| 6 | ZIMMER, Donovan | SO | Parkway Central High School | 55.27 | Verified |
| 7 | HARRIS, Owen | FR | Rolla High School | 1:01.02 | Verified |
| 8 | OPOKU, Joshua | FR | Parkway Central High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | KLAGES, Kaden | FR | Eureka High School | 50.69 | Verified |
| 2 | NETTLES, Marquise | FR | Parkway South High School | 49.77 | Verified |
| 3 | SCHLUETER, Cameron | SO | St. Louis University High School | 48.89 | Unverified: |
| 4 | KALETKA, Andrew | SO | Mehlville High School | 45.80 | Verified |
| 5 | WATKINS, Luke | SO | Parkway South High School | 47.94 | Verified |
| 6 | KADIMA, Exauce | JR | Ritenour High School | 49.60 | Verified |
| 7 | BERRY, John | FR | Eureka High School | 50.23 | Verified |
| 8 | HARDY, Maxwell | JR | Mehlville High School | 51.89 | Verified |