2018 Northwestern Wildcats Opponent Penalty Split Stats through 01/07/2019
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 14 | 99 | 947 | 7.1 | 67.6 |
| at Home | 7 | 59 | 549 | 8.4 | 78.4 |
| on Road/Neutral Site | 7 | 40 | 398 | 5.7 | 56.9 |
| in Wins | 9 | 52 | 517 | 5.8 | 57.4 |
| in Losses | 5 | 47 | 430 | 9.4 | 86.0 |
| vs. Conference | 10 | 68 | 672 | 6.8 | 67.2 |
| vs. Non-Conference | 4 | 31 | 275 | 7.8 | 68.8 |
| vs. Ranked (AP) | 4 | 31 | 283 | 7.8 | 70.8 |
| vs. Unranked (AP) | 10 | 68 | 664 | 6.8 | 66.4 |
| vs. FBS (I-A) | 14 | 99 | 947 | 7.1 | 67.6 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 9 | 52 | 497 | 5.8 | 55.2 |
| vs. FBS Non-Winning | 5 | 47 | 450 | 9.4 | 90.0 |
| vs. FBS Power 5 | 12 | 76 | 749 | 6.3 | 62.4 |
| vs. FBS non-Power 5 | 2 | 23 | 198 | 11.5 | 99.0 |
| in August/September | 4 | 39 | 377 | 9.8 | 94.3 |
| in October | 4 | 26 | 252 | 6.5 | 63.0 |
| in November | 4 | 21 | 193 | 5.3 | 48.3 |
| in December/January | 2 | 13 | 125 | 6.5 | 62.5 |