2021 USC Trojans Opponent Penalty Split Stats through 01/10/2022
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 12 | 86 | 828 | 7.2 | 69.0 |
| at Home | 7 | 57 | 548 | 8.1 | 78.3 |
| on Road/Neutral Site | 5 | 29 | 280 | 5.8 | 56.0 |
| in Wins | 4 | 36 | 363 | 9.0 | 90.8 |
| in Losses | 8 | 50 | 465 | 6.3 | 58.1 |
| vs. Conference | 9 | 66 | 656 | 7.3 | 72.9 |
| vs. Non-Conference | 3 | 20 | 172 | 6.7 | 57.3 |
| vs. Ranked (AP) | 3 | 12 | 109 | 4.0 | 36.3 |
| vs. Unranked (AP) | 9 | 74 | 719 | 8.2 | 79.9 |
| vs. FBS (I-A) | 12 | 86 | 828 | 7.2 | 69.0 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 7 | 46 | 436 | 6.6 | 62.3 |
| vs. FBS Non-Winning | 5 | 40 | 392 | 8.0 | 78.4 |
| vs. FBS Power 5 | 9 | 66 | 656 | 7.3 | 72.9 |
| vs. FBS non-Power 5 | 3 | 20 | 172 | 6.7 | 57.3 |
| in August/September | 4 | 36 | 325 | 9.0 | 81.3 |
| in October | 4 | 25 | 288 | 6.3 | 72.0 |
| in November | 3 | 19 | 162 | 6.3 | 54.0 |
| in December/January | 1 | 6 | 53 | 6.0 | 53.0 |