| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | WILLIAMS, Rahshid | Oak Lawn Community High School | NT |
| 4 | JACKSON, Christian | Richards (Oak Lawn) | 52.14 |
| 5 | GRAY, Hunter | Oak Lawn Community High School | NT |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 1 | COY, Marc | Marist High School | 49.34 |
| 2 | JUHASZ, Keanu | Brother Rice High School | 48.50 |
| 3 | KOKOT, Kamil | Marist High School | 45.19 |
| 4 | HOWER-GARDNER, Terrance | Tinley Park High School | 44.90 |
| 5 | MCDONNELL, Dylan | Brother Rice High School | 45.06 |
| 6 | KORICH, Isaac | Tinley Park High School | 45.60 |
| 7 | WILLIAMS, Jordan | Evergreen Park Community High Sc | 49.15 |
| 8 | SCARBROUGH-BROWN, Caleb | Evergreen Park Community High Sc | 49.68 |