| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 2 | ESCAMIROSA, Eduardo | SR | Addison (A. Trail) | 58.76 | 
| 3 | FLORES, Avi | SR | Franklin Park-Northlake (Leyden) | 57.43 | 
| 4 | KOELIKAMP, Luke | JR | Hoffman Estates (Conant) | 56.90 | 
| 5 | NIYOZIMA, Richard | FR | Rock Island (H.S.) | 57.02 | 
| 6 | MOLCZAN, Logan | FR | Richmond (R.-Burton) | 58.48 | 
| 7 | MERCADO, David | SR | Park Ridge (Maine East) | 1:00.00 | 
| Lane | Athlete | Yr. | Team | Seed | 
|---|---|---|---|---|
| 1 | HERNANDEZ, David | SO | Lombard (Glenbard East) | 54.95 | 
| 2 | SINGH, Preetpaul | SR | Hoffman Estates (H.S.) | 52.97 | 
| 3 | BARAJAS, Eric | JR | Zion (Z.-Benton) | 52.34 | 
| 4 | NUMANI, Jon | SO | Mt. Prospect (Prospect) | NT | 
| 5 | ARMSTRONG, Malik | SR | Minooka | 50.40 | 
| 6 | REDMOND, Travonte | JR | Hillside (Proviso West) | 52.50 | 
| 7 | NITTI, Anthony | SO | Glen Ellyn (Glenbard West) | 53.10 | 
| 8 | DOHR, Charlie | JR | Park Ridge (Maine South) | 55.68 |