| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | WALTHER, John | SO | Palatine (Fremd) | NT |
| 2 | PARK, Dean | FR | Elk Grove Village (E.G.) | 1:06.72 |
| 3 | CHEIKYCHARLA, Rithwik | SO | Schaumburg | 1:03.89 |
| 4 | PAZOS, Devin | SO | Hoffman Estates (H.S.) | 1:02.78 |
| 5 | FOLEY, Thomas | SO | Schaumburg | 1:02.98 |
| 6 | OKULANIS, Joey | FR | Hoffman Estates (Conant) | 1:04.68 |
| 7 | SCHROEDER, Mike | FR | Arlington Heights (Hersey) | 1:08.02 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | PENDEV, Dimitar | FR | Elk Grove Village (E.G.) | 1:02.27 |
| 2 | HERNANDEZ, Chris | FR | Rolling Meadows | 1:00.36 |
| 3 | AHRENS, Josh | SO | Hoffman Estates (Conant) | 59.98 |
| 4 | BLAJDA, Fabian | FR | Palatine (H.S.) | 59.41 |
| 5 | LUCAS, Alex | SO | Wheeling | 59.78 |
| 6 | MOGA, Conor | FR | Arlington Heights (Hersey) | 1:00.29 |
| 7 | MENDOZA, Fernando | SO | Wheeling | 1:01.76 |
| 8 | FOSTER, Tristen | SO | Hoffman Estates (H.S.) | 1:02.54 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | ANIECKO, Fillip | FR | Buffalo Grove | 58.99 |
| 2 | BARRETTO, Danny | SO | Rolling Meadows | 58.76 |
| 3 | MANNING, Pacey | FR | Palatine (H.S.) | 56.58 |
| 4 | KNEE, Charlie | SO | Mt. Prospect (Prospect) | 54.43 |
| 5 | NUMANI, Jon | SO | Mt. Prospect (Prospect) | 55.19 |
| 6 | PORTER, AJ | FR | Palatine (Fremd) | 57.92 |
| 7 | KARAM, Finn | FR | Barrington | 58.92 |
| 8 | DEGOMA, Keegan | FR | Barrington | 59.08 |