Section 1 of 4
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | JELTES, Aeden | Gateway High School | NT | ||
| 3 | LEVINE, Owen | 9 | Ladue Horton Watkins High School | NT | Unverified: |
| 4 | PARSLEY, Matt | 9 | Lindbergh High School | NT | Unverified: |
Section 2 of 4
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | HALDIMAN, Thomas | JR | Clayton High School | NT | Unverified: |
| 3 | PESSELATO, Cristoforo | 9 | Mehlville High School | 1:01.84 | Verified |
| 4 | REBSTOCK, Holden | Gateway High School | 1:07.76 | ||
| 5 | GARCIA, Dylan | JR | Clayton High School | NT | Unverified: |
Section 3 of 4
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | ARADHYA, SUPREET | SO | Lafayette (Wildwood) High School | 1:00.41 | Verified |
| 2 | BAKER, Derrick | JR | St. Louis University High School | 58.65 | Unverified: |
| 3 | SMITH, Cadin | SO | Webster Groves High School | 58.04 | Verified |
| 4 | EVANS, William | SO | Mehlville High School | 58.39 | Verified |
| 5 | SMITH, Alec | SO | Lafayette (Wildwood) High School | 1:00.25 | Verified |
| 6 | BACKOWSKI, Justin | Gateway High School | 1:00.81 |
Section 4 of 4
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | LUCAS, Kahairi | SO | Ladue Horton Watkins High School | 57.50 | Unverified: |
| 2 | BRONNER, Jude | SO | Webster Groves High School | 56.56 | Verified |
| 3 | GODWIN, Grant | JR | Kirkwood High School | 56.00 | Unverified: |
| 4 | SEAL, Wyatt | SO | St. Louis University High School | 56.21 | Unverified: |
| 5 | EATON, Nicholas | 9 | Lindbergh High School | 57.04 | Verified |
| 6 | WALLACE, Kylan | 9 | Kirkwood High School | 58.00 | Unverified: |
