| MR | Northern Illinois Invitational | 49.06 | Gamez | C.L. South | 2009 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 2 | AL-ZIRJ, Ali | SO | Freeport (H.S.) | 1:03.64 |
| 3 | MCLARTY, Jake | SO | Rockton (Hononegah) | 58.55 |
| 4 | OLBERG, Ben | JR | Rolling Meadows | 56.94 |
| 5 | NEMETH, Nick | SR | Rockton (Hononegah) | 57.25 |
| 6 | LASSANDRO, Elias | SR | Freeport (H.S.) | 59.99 |
| 7 | MULENGA, George | JR | Rockford (Boylan Catholic) | 1:04.87 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | FIORENZA, Joseph | FR | Rockford (Boylan Catholic) | 56.40 |
| 2 | WINTERS, Aaron | SR | Belvidere (North) | 55.94 |
| 3 | WEHDE, Tyler | JR | Machesney Park (Harlem) | 55.55 |
| 4 | MAHON, Ian | JR | Crystal Lake (Prairie Ridge) | 55.34 |
| 5 | VAZQUEZ, Mateo | JR | Sterling (H.S) | 55.40 |
| 6 | ESCALANTE, Irving | SO | Rochelle | 55.84 |
| 7 | SMITH, Jackson | 9 | Rochelle | NT |
| 8 | KESWANI, Magnus | SR | Sycamore (H.S) | 56.60 |
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | HALVERSON, Tyler | SO | Machesney Park (Harlem) | NT |
| 2 | JOHNSON, Jack | JR | Crystal Lake (South) | 54.04 |
| 3 | CARDENAS, Daniel | SO | Crystal Lake (Prairie Ridge) | NT |
| 4 | BRITT, Jordan | SO | Sterling (H.S) | 51.86 |
| 5 | BROWN, Braeden | SO | Belvidere (North) | 52.77 |
| 6 | GARCIA, Alec | SR | Sycamore (H.S) | 53.54 |
| 7 | MARUNDE, Blake | SO | Crystal Lake (South) | 54.94 |
| 8 | VANN, Chris | SR | Rolling Meadows | 55.18 |