| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 3 | Palos Hills (Stagg) | A | Little | Smith | Gocmen | Cortez | 48.50 |
| 4 | Lockport (Twp.) | A | Carpenter | Gonzalez | Kelso | Williams | 44.80 |
| 5 | Orland Park (Sandburg) | A | McBride | Shabani | Dyra | Sebastian | 45.61 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 1 | Tinley Park (Andrew) | A | Thompson | Penoyer | Thigpen | Michel | 44.27 |
| 2 | New Lenox (Lincoln-Way Centr | A | Ikerodah | Galka | Costello | Udovich | 43.82 |
| 3 | Frankfort (Lincoln-Way East) | A | Moraga | Ruane-Martino | Kuli | Richardson Jr | 43.28 |
| 4 | Flossmoor (Homewood-F.) | A | McDonald | Mitchell | Ellis | Jordan | DQ |
| 5 | Bolingbrook | A | Bolden | Terry | Cathey | Jackson Jr. | 42.90 |
| 6 | New Lenox (Lincoln-Way West) | A | Veldman | Ringberg | Abubakar | O'Leary | 43.78 |
| 7 | Bradley (B.-Bourbonnais) | A | Anders | Horton | Clark | Jackson | 44.24 |