2021 Notre Dame Fighting Irish Opponent Penalty Split Stats through 01/10/2022
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 13 | 90 | 705 | 6.9 | 54.2 |
| at Home | 7 | 52 | 418 | 7.4 | 59.7 |
| on Road/Neutral Site | 6 | 38 | 287 | 6.3 | 47.8 |
| in Wins | 11 | 81 | 635 | 7.4 | 57.7 |
| in Losses | 2 | 9 | 70 | 4.5 | 35.0 |
| vs. Conference | 0 | 0 | 0 | - | - |
| vs. Non-Conference | 13 | 90 | 705 | 6.9 | 54.2 |
| vs. Ranked (AP) | 2 | 9 | 70 | 4.5 | 35.0 |
| vs. Unranked (AP) | 11 | 81 | 635 | 7.4 | 57.7 |
| vs. FBS (I-A) | 13 | 90 | 705 | 6.9 | 54.2 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 5 | 32 | 272 | 6.4 | 54.4 |
| vs. FBS Non-Winning | 8 | 58 | 433 | 7.3 | 54.1 |
| vs. FBS Power 5 | 10 | 68 | 537 | 6.8 | 53.7 |
| vs. FBS non-Power 5 | 3 | 22 | 168 | 7.3 | 56.0 |
| in August/September | 4 | 32 | 256 | 8.0 | 64.0 |
| in October | 4 | 28 | 205 | 7.0 | 51.3 |
| in November | 4 | 26 | 199 | 6.5 | 49.8 |
| in December/January | 1 | 4 | 45 | 4.0 | 45.0 |