2021 Illinois Fighting Illini Opponent First Down Split Stats through 01/10/2022
| Split | G | Rush | Pass | Penalty | Total |
|---|---|---|---|---|---|
| All Games | 12 | 117 | 118 | 17 | 252 |
| at Home | 7 | 85 | 62 | 6 | 153 |
| on Road/Neutral Site | 5 | 32 | 56 | 11 | 99 |
| in Wins | 5 | 35 | 40 | 8 | 83 |
| in Losses | 7 | 82 | 78 | 9 | 169 |
| vs. Conference | 9 | 93 | 78 | 7 | 178 |
| vs. Non-Conference | 3 | 24 | 40 | 10 | 74 |
| vs. Ranked (AP) | 1 | 11 | 5 | 2 | 18 |
| vs. Unranked (AP) | 11 | 106 | 113 | 15 | 234 |
| vs. FBS (I-A) | 12 | 117 | 118 | 17 | 252 |
| vs. FCS (I-AA) | 0 | 0 | 0 | 0 | 0 |
| vs. FBS Winning | 7 | 69 | 71 | 8 | 148 |
| vs. FBS Non-Winning | 5 | 48 | 47 | 9 | 104 |
| vs. FBS Power 5 | 10 | 100 | 97 | 12 | 209 |
| vs. FBS non-Power 5 | 2 | 17 | 21 | 5 | 43 |
| in August/September | 5 | 37 | 72 | 8 | 117 |
| in October | 4 | 53 | 27 | 4 | 84 |
| in November | 3 | 27 | 19 | 5 | 51 |
| in December/January | 0 | 0 | 0 | 0 | 0 |