| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | TRUEMPER, Behren | SR | Maplewood-Richmond Hts. High Sch | NT | |
| 2 | FILES, Jeffery | JR | Ft. Zumwalt North High School | NT | |
| 3 | PIRRUNG, Camden | FR | Ft. Zumwalt North High School | NT | Unverified: |
| 4 | GREEN, Kerry | FR | Maplewood-Richmond Hts. High Sch | NT | Unverified: |
| 5 | GADDY, Nolan | SR | Parkway West High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | DAWSON, Thomas | SO | Seckman High School | NT | Unverified: |
| 3 | SIMMONS, Alijah | SO | Marquette High School | NT | Unverified: |
| 4 | BRAGG, Brandon | JR | Hazelwood Central High School | NT | Unverified: |
| 5 | WILLIAMS, Damori | SR | Riverview Gardens High School | NT | Unverified: |
| 6 | REDD, Nasir | JR | Riverview Gardens High School | NT | Unverified: |
| 7 | PHOERDIAN, Eric | FR | Hazelwood East High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | JOHNSON, Amari | SO | Riverview Gardens High School | 1:07.95 | Verified |
| 2 | WILLIS, Kionne | SO | Maplewood-Richmond Hts. High Sch | 1:05.01 | Verified |
| 3 | WARD, Marcus | SO | Hazelwood Central High School | 1:03.48 | Verified |
| 4 | SMITH, Bailey | FR | Northwest (Cedar Hill) High Scho | 1:02.35 | Verified |
| 5 | ROYSTON, Jalen | SO | Maplewood-Richmond Hts. High Sch | 1:03.22 | Verified |
| 6 | SHIELDS, Cedric | FR | Hazelwood East High School | 1:03.99 | Verified |
| 7 | LIPP, Austin | SO | Seckman High School | 1:07.00 | Unverified: |
| 8 | DERSTINE, Landon | FR | Marquette High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | PENBERTHY, Micah | FR | Northwest (Cedar Hill) High Scho | 1:01.00 | Verified |
| 2 | VALENTINE WALLS, ETHAN | SR | Marquette High School | 59.90 | Unverified: |
| 3 | BROWN, KeJuan | SO | Vashon High School | 58.53 | Verified |
| 4 | STEUBY, Thomas | SO | Kirkwood High School | 58.20 | Unverified: |
| 5 | COYLE, James | SO | Liberty (Wentzville) High School | 58.50 | Unverified: |
| 6 | MITCHELL, Victor | SR | Hazelwood Central High School | 59.77 | Verified |
| 7 | MEISE, Will | JR | Lafayette (Wildwood) High School | 1:00.10 | Verified |
| 8 | GRIFFIN, Jalen | SO | Northwest (Cedar Hill) High Scho | 1:02.27 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | TUGGLES, Malachi | FR | Lafayette (Wildwood) High School | 58.00 | Unverified: |
| 2 | GIPSON, Jeremy | JR | Ladue Horton Watkins High School | 57.00 | Unverified: |
| 3 | VEHIGE, MATTHEW | JR | Lafayette (Wildwood) High School | 56.81 | Unverified: |
| 4 | FRIEND, Antwon | JR | Ft. Zumwalt North High School | 54.51 | Verified |
| 5 | ARANETA, Alexander | SO | Kirkwood High School | 56.50 | Unverified: |
| 6 | EARL, Steve | FR | Kirkwood High School | 57.00 | Unverified: |
| 7 | III, Tommie Vaughn | JR | Hazelwood East High School | 57.59 | Verified |
| 8 | HAYNES, Linden | SO | Ladue Horton Watkins High School | 58.00 | Unverified: |