| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 2 | VILLARREAL, David | SR | Franklin Park-Northlake (Leyden) | NT | 
| 3 | STACHURA, Mateusz | JR | Addison (A. Trail) | 1:04.00 | 
| 4 | BUCHANAN, Davonte | JR | Hillside (Proviso West) | 1:00.50 | 
| 5 | AIMONE, Jake | FR | Park Ridge (Maine East) | 1:01.43 | 
| 6 | GUNDERSON, Isaac | SR | Richmond (R.-Burton) | 58.48 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | WHITAKER, Nigel | SR | Hoffman Estates (Conant) | 59.30 | 
| 2 | HULEY, Isaiah | SR | Zion (Z.-Benton) | 55.27 | 
| 3 | DAUKSAS, Andrew | SR | Glen Ellyn (Glenbard West) | 54.39 | 
| 4 | CONNOLLY, Charlie | SO | Mt. Prospect (Prospect) | NT | 
| 5 | BALKEMA, Max | JR | Minooka | 53.40 | 
| 6 | PATRICK, William | FR | Hoffman Estates (H.S.) | 55.08 | 
| 7 | BARINA, Nathan | SO | Park Ridge (Maine South) | 55.81 | 
| 8 | GARZONA, Joseph | SR | Lombard (Glenbard East) | 57.84 |