2018 USC Trojans Penalty Split Stats through 01/07/2019
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 12 | 96 | 883 | 8.0 | 73.6 |
| at Home | 6 | 47 | 445 | 7.8 | 74.2 |
| on Road/Neutral Site | 6 | 49 | 438 | 8.2 | 73.0 |
| in Wins | 5 | 51 | 467 | 10.2 | 93.4 |
| in Losses | 7 | 45 | 416 | 6.4 | 59.4 |
| vs. Conference | 9 | 72 | 655 | 8.0 | 72.8 |
| vs. Non-Conference | 3 | 24 | 228 | 8.0 | 76.0 |
| vs. Ranked (AP) | 3 | 26 | 235 | 8.7 | 78.3 |
| vs. Unranked (AP) | 9 | 70 | 648 | 7.8 | 72.0 |
| vs. FBS (I-A) | 12 | 96 | 883 | 8.0 | 73.6 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 7 | 44 | 418 | 6.3 | 59.7 |
| vs. FBS Non-Winning | 5 | 52 | 465 | 10.4 | 93.0 |
| vs. FBS Power 5 | 10 | 82 | 754 | 8.2 | 75.4 |
| vs. FBS non-Power 5 | 2 | 14 | 129 | 7.0 | 64.5 |
| in August/September | 5 | 46 | 426 | 9.2 | 85.2 |
| in October | 3 | 22 | 216 | 7.3 | 72.0 |
| in November | 4 | 28 | 241 | 7.0 | 60.3 |
| in December/January | 0 | 0 | 0 | - | - |