| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 4 | WARD, Michael | JR | Seckman High School | 1:02.18 | Verified |
| 5 | WELLS, James | SO | Fox High School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | DIMMICK, BRYAN | SR | Mehlville High School | 58.04 | Verified |
| 2 | ALTENBERND, JOSEPH | JR | Oakville High School | 56.76 | Verified |
| 3 | MAYER, Steffan | JR | St. Louis University High School | 56.32 | Verified |
| 4 | MCFARLAND, Makel | JR | Poplar Bluff High School | 54.22 | Verified |
| 5 | ALSPAUGH, Gavin | 9 | Jackson High School | 55.54 | Verified |
| 6 | MUSTAJBEGOVIC, EMIR | JR | Oakville High School | 56.46 | Verified |
| 7 | ROE, Riker | SO | Fox High School | 57.25 | Verified |
| 8 | UTSEY, Jeremyah | 9 | Mehlville High School | 59.35 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | ROGERS, Payton | JR | Poplar Bluff High School | 53.90 | Verified |
| 2 | EATON, Nicholas | SO | Lindbergh High School | 53.31 | Verified |
| 3 | LEWIS, John | JR | Webster Groves High School | 53.16 | Verified |
| 4 | JONES, James | SR | Webster Groves High School | 51.09 | Verified |
| 5 | RUDANOVICH, Kaleb | JR | Seckman High School | 51.79 | Verified |
| 6 | BAKER, Jackson | SR | Lindbergh High School | 53.31 | Verified |
| 7 | CAIN, BLAKE | 9 | Jackson High School | 53.79 | Verified |
| 8 | LOWE, Carter | JR | St. Louis University High School | 53.93 | Verified |
