| Lane | Team | Squad | Seed |
|---|---|---|---|
| 3 | Chicago (North Lawndale Charter) | A | 58.04 |
| 4 | Chicago (De La Salle) | A | 55.12 |
| 5 | Perspectives IIT Math and Science | A | 55.99 |
| 6 | Chicago (Perspectives Charter/Calumet) | A | 1:00.79 |
| Lane | Team | Squad | Seed |
|---|---|---|---|
| 1 | Chicago (Westinghouse College Prep) | A | 54.12 |
| 2 | Evanston (Twp.) | A | 51.56 |
| 3 | Gary West Side | A | 50.60 |
| 4 | East St. Louis | A | 48.44 |
| 5 | Springfield (Southeast) | A | 49.98 |
| 6 | Chicago (Morgan Park) | A | 50.95 |
| 7 | Richton Park (Southland College Prep) | A | 53.50 |