| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | HARIDAS, Vansh | SO | ELGIN (E. ACADEMY) | 1:18.23 |
| 2 | RODRIGUEZ, Fransisco | FR | CONANT | 1:01.00 |
| 3 | SOSA, Juan Carlos | SO | FENTON | 58.95 |
| 4 | FOSTER, Chris | SR | PROVISO WEST | 58.00 |
| 5 | HEUMANN, Zach | FR | SCHAUMBURG | 58.90 |
| 6 | VIVERO, Horfanel | SO | ADDISON TRAIL | 59.19 |
| 7 | KOCIUBINSKI, Michael | FR | FRANKLIN PARK-NORTHLAKE (LEYDEN) | 1:03.85 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | GANCARZ, Michael | SR | MAINE SOUTH | 56.10 |
| 2 | GARCIA, Abraham | FR | ZION-BENTON | 55.80 |
| 3 | REBOLLO, Kevin | SR | HOFFMAN ESTATES | 53.94 |
| 4 | CHERY, Schneider | JR | MAINE EAST | 51.90 |
| 5 | HAASE, Nick | JR | MINOOKA | 53.54 |
| 6 | GARCIA, Julian | SR | GLENBARD WEST | 54.17 |
| 7 | MEKKY, Adam | JR | MT. PROSPECT (PROSPECT) | 55.90 |