| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 2 | HERTZ, Adam | Herscher | 49.24 |
| 3 | CARMICHAEL, Matas | Lemont | 48.12 |
| 4 | COLEMAN, Mario | South Shore Int'l Prep | 48.80 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | FLEISCHAUER, Caleb | Herscher | 47.46 |
| 2 | HUI, Derek | Lake Forest Academy | 46.97 |
| 3 | COOPER, Cordell | South Shore Int'l Prep | 45.90 |
| 4 | MOODIE, Josiah | Chicago (C. Hope Academy) | 46.10 |
| 5 | HROMIC, Aleks | Lake Forest Academy | 47.00 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | REED, Donte | St. Laurence | 45.62 |
| 2 | LEHENBAUER, David | Lemont | 43.00 |
| 3 | MCCARTHY, Aidan | St. Laurence | 41.91 |
| 4 | TAVARAS, Ben | New Lenox (Providence Catholic) | 42.54 |
| 5 | RUDDY, Jack | New Lenox (Providence Catholic) | 43.86 |
| 6 | WILSON, Macrae | Chicago (C. Hope Academy) | 45.71 |