| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 4 | Dibiasi, Michael | SR | Franklin Park-Northlake (Leyden) | 56.74 | |
| 5 | Bermudez, Cesar | SO | Fenton | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Askins, Katrell | FR | Proviso West | 54.30 | |
| 2 | Wozniak, Dan | SR | Conant | 54.10 | |
| 3 | Rodriguez, Angel | SO | Addison Trail | NT | |
| 4 | Arroyo, Aaron | JR | Minooka | 52.22 | |
| 5 | Brown, Tyler | SR | Zion-Benton | 52.36 | |
| 6 | Freeman, Alvin | FR | Maine East | NT | |
| 7 | O'Hagen, Sean | FR | Maine South | NT | |
| 8 | Lussenhop, Tim | JR | Mt. Prospect (Prospect) | 55.64 |