| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | FAJARDO, Jerecho | JR | Francis Howell North High School | 56.78 | Verified |
| 4 | COLOMBO, Dalton | SO | Union High School | 54.74 | Verified |
| 5 | SCOTT, Ethan | FR | Francis Howell North High School | 56.02 | Verified |
| 6 | MCGHEE, Jesse | SO | Troy Buchanan High School | 57.24 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | BAILEY, Bernard | SR | Rock Bridge High School | 53.93 | Verified |
| 2 | KINION, Landon | JR | Francis Howell Central High Scho | 53.67 | Verified |
| 3 | JONES, Landon | SO | Liberty (Wentzville) High School | 53.58 | Verified |
| 4 | BOSTON, Landon | JR | Washington High School | 53.14 | Verified |
| 5 | MARTIN, Andrew | SO | Francis Howell Central High Scho | 53.58 | Verified |
| 6 | REID, Charles | SO | St. Charles High School | 53.63 | Verified |
| 7 | HOLT, Devin | SO | Rock Bridge High School | 53.93 | Verified |
| 8 | MAHLER, Thomas | JR | Troy Buchanan High School | 54.22 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | WILLIAMS, Reid | SO | Francis Howell High School | 52.86 | Verified |
| 2 | ST. JEAN, Dominic | JR | Ft. Zumwalt West High School | 52.36 | Verified |
| 3 | DUBOSE, Doreon | JR | Christian Brothers College High | 51.66 | Verified |
| 4 | PICKARD, Bryson | SR | Union High School | 49.09 | Verified |
| 5 | MILAM, Ethan | SR | Francis Howell High School | 50.55 | Verified |
| 6 | SALAMONE, Jadon | SO | St. Charles High School | 51.74 | Verified |
| 7 | JONES, Alex | JR | Ft. Zumwalt West High School | 52.47 | Verified |
| 8 | SCHLATTMAN, Nolan | JR | Liberty (Wentzville) High School | 52.87 | Verified |