2018 Illinois Fighting Illini Opponent First Down Split Stats through 01/07/2019
| Split | G | Rush | Pass | Penalty | Total |
|---|---|---|---|---|---|
| All Games | 12 | 147 | 131 | 23 | 301 |
| at Home | 6 | 68 | 60 | 15 | 143 |
| on Road/Neutral Site | 6 | 79 | 71 | 8 | 158 |
| in Wins | 4 | 34 | 44 | 10 | 88 |
| in Losses | 8 | 113 | 87 | 13 | 213 |
| vs. Conference | 9 | 120 | 89 | 18 | 227 |
| vs. Non-Conference | 3 | 27 | 42 | 5 | 74 |
| vs. Ranked (AP) | 3 | 43 | 22 | 5 | 70 |
| vs. Unranked (AP) | 9 | 104 | 109 | 18 | 231 |
| vs. FBS (I-A) | 11 | 143 | 120 | 19 | 282 |
| vs. FCS (I-AA) | 1 | 4 | 11 | 4 | 19 |
| vs. FBS Winning | 6 | 84 | 58 | 10 | 152 |
| vs. FBS Non-Winning | 5 | 59 | 62 | 9 | 130 |
| vs. FBS Power 5 | 9 | 120 | 89 | 18 | 227 |
| vs. FBS non-Power 5 | 2 | 23 | 31 | 1 | 55 |
| in August/September | 4 | 47 | 49 | 9 | 105 |
| in October | 4 | 58 | 48 | 9 | 115 |
| in November | 4 | 42 | 34 | 5 | 81 |
| in December/January | 0 | 0 | 0 | 0 | 0 |