| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | QUIROZ, Armando | SO | Oak Forest High School | 1:01.00 | Unverified: |
| 4 | PATTERSON, Leron | SO | Oak Forest High School | 1:03.00 | Unverified: |
| 5 | CAGNOLATTI, Korey | FR | Lincoln-Way Central High School | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | HOLT, Corey | SR | Crete-Monee High School | 1:00.00 | Unverified: |
| 3 | GALKA, Luke | SO | Lincoln-Way Central High School | 59.68 | Verified |
| 4 | POKU, Jojo | FR | Crete-Monee High School | 1:00.00 | Unverified: |
| 5 | WOLNIAKOWSKI, Ryan | SO | Providence Catholic High School | 1:00.24 | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | SHANAHAN, Blake | SO | Lincoln Way West High School | 58.64 | Unverified: Bolingbrook Invite |
| 2 | MIRANDA, Anthony | 9 | Joliet Central High School | 56.54 | Verified |
| 3 | O'BROCHTA, Gavin | FR | Marist High School | 56.14 | Verified |
| 4 | BLAKEY, Gavin | SO | Marist High School | 56.50 | Verified |
| 5 | GREEN, Ja'Marrion | SO | Joliet Central High School | 58.54 | Verified |
| 6 | URBANCZYK, Jack | SO | Lincoln Way West High School | 59.25 | Unverified: |