| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 2 | VALENCIA, Alex | SO | Schaumburg | NT | |
| 3 | BEASLEY, Riley | SR | Palatine (H.S.) | 55.60 | |
| 4 | TAKAHASHI, Ikki | SO | Barrington | 53.20 | |
| 5 | MCCLANAHAN, Patrick | SR | Palatine (H.S.) | 55.00 | |
| 6 | BANKOWSKI, Oscar | SR | Barrington | 57.20 | |
| 7 | JAIMES, Marcos | SR | Schaumburg | NT |