2021 SMU Mustangs Penalty Split Stats through 01/10/2022
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 12 | 67 | 627 | 5.6 | 52.3 |
| at Home | 6 | 36 | 358 | 6.0 | 59.7 |
| on Road/Neutral Site | 6 | 31 | 269 | 5.2 | 44.8 |
| in Wins | 8 | 40 | 393 | 5.0 | 49.1 |
| in Losses | 4 | 27 | 234 | 6.8 | 58.5 |
| vs. Conference | 8 | 47 | 432 | 5.9 | 54.0 |
| vs. Non-Conference | 4 | 20 | 195 | 5.0 | 48.8 |
| vs. Ranked (AP) | 2 | 6 | 49 | 3.0 | 24.5 |
| vs. Unranked (AP) | 10 | 61 | 578 | 6.1 | 57.8 |
| vs. FBS (I-A) | 11 | 65 | 617 | 5.9 | 56.1 |
| vs. FCS (I-AA) | 1 | 2 | 10 | 2.0 | 10.0 |
| vs. FBS Winning | 4 | 25 | 226 | 6.3 | 56.5 |
| vs. FBS Non-Winning | 7 | 40 | 391 | 5.7 | 55.9 |
| vs. FBS Power 5 | 1 | 4 | 30 | 4.0 | 30.0 |
| vs. FBS non-Power 5 | 10 | 61 | 587 | 6.1 | 58.7 |
| in August/September | 4 | 20 | 195 | 5.0 | 48.8 |
| in October | 4 | 18 | 168 | 4.5 | 42.0 |
| in November | 4 | 29 | 264 | 7.3 | 66.0 |
| in December/January | 0 | 0 | 0 | - | - |