| Boys Tennis Results | 2004 |
| May 22 | | Aurora (West) |
| May 22 | | Belleville (East) |
| May 22 | | Bloomington (H.S.) |
| May 22 | | Casey (C.-Westfield) |
| May 22 | | Centralia |
| May 22 | | Chatham (Glenwood) |
| May 22 | | Chicago (F.W. Parker) |
| May 22 | | Chicago (Morgan Park Academy) |
| May 22 | | Chicago (University) |
| May 22 | | Crystal Lake (Central) |
| May 22 | | Decatur (MacArthur) |
| May 22 | | Downers Grove (South) |
| May 22 | | Edwardsville (H.S.) |
| May 22 | | Elgin (H.S.) |
| May 22 | | Elmhurst (York) |
| May 22 | | Evanston (Twp.) |
| May 22 | | Flossmoor (Homewood-F.) |
| May 22 | | Frankfort (Lincoln-Way East) |
| May 22 | | Gurnee (Warren) |
| May 22 | | Highland Park |
| May 22 | | Hoffman Estates (H.S.) |
| May 22 | | Mt. Prospect (Prospect) |
| May 22 | | Naperville (North) |
| May 22 | | Oak Park (O.P.-River Forest) |
| May 22 | | Ottawa (Twp.) |
| May 22 | | Palos Hills (Stagg) |
| May 22 | | Peoria (Richwoods) |
| May 22 | | Plainfield (Central) |
| May 22 | | Rock Island (H.S.) |
| May 22 | | Rockford (Guilford) |
| May 22 | | St. Charles (East) |
| May 22 | | Urbana (H.S.) |