| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | WRIGHT, Armani | 9 | McCluer High School | 52.03 | Verified |
| 4 | BADMUS, Emmanuel | JR | Ladue Horton Watkins High School | 49.19 | Verified |
| 5 | PITTS, Meshach | JR | Rockwood Summit High School | 49.96 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | BADHE, Sahil | SO | Parkway Central High School | 46.71 | Verified |
| 2 | BROWN, Mason | SR | Rockwood Summit High School | 46.37 | Verified |
| 3 | MOORE, Donteaus | JR | Parkway West High School | 40.79 | Verified |
| 4 | GRAY, Earl | SR | McCluer North High School | 40.06 | Verified |
| 5 | WALKER, Devon | SR | Parkway Central High School | 40.34 | Verified |
| 6 | HAWVER, Mason | SR | Parkway West High School | 44.73 | Verified |
| 7 | ARMSTRONG, Armond | SO | McCluer High School | 46.41 | Verified |
