2021 Illinois Fighting Illini Penalty Split Stats through 01/10/2022
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 12 | 61 | 645 | 5.1 | 53.8 |
| at Home | 7 | 30 | 315 | 4.3 | 45.0 |
| on Road/Neutral Site | 5 | 31 | 330 | 6.2 | 66.0 |
| in Wins | 5 | 26 | 309 | 5.2 | 61.8 |
| in Losses | 7 | 35 | 336 | 5.0 | 48.0 |
| vs. Conference | 9 | 39 | 409 | 4.3 | 45.4 |
| vs. Non-Conference | 3 | 22 | 236 | 7.3 | 78.7 |
| vs. Ranked (AP) | 1 | 10 | 96 | 10.0 | 96.0 |
| vs. Unranked (AP) | 11 | 51 | 549 | 4.6 | 49.9 |
| vs. FBS (I-A) | 12 | 61 | 645 | 5.1 | 53.8 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 7 | 36 | 345 | 5.1 | 49.3 |
| vs. FBS Non-Winning | 5 | 25 | 300 | 5.0 | 60.0 |
| vs. FBS Power 5 | 10 | 47 | 499 | 4.7 | 49.9 |
| vs. FBS non-Power 5 | 2 | 14 | 146 | 7.0 | 73.0 |
| in August/September | 5 | 25 | 245 | 5.0 | 49.0 |
| in October | 4 | 14 | 170 | 3.5 | 42.5 |
| in November | 3 | 22 | 230 | 7.3 | 76.7 |
| in December/January | 0 | 0 | 0 | - | - |