2018 USC Trojans Opponent Penalty Split Stats through 01/07/2019
| Split | G | Pen. | Yards | Pen./G | Yards/G |
|---|---|---|---|---|---|
| All Games | 12 | 70 | 643 | 5.8 | 53.6 |
| at Home | 6 | 35 | 355 | 5.8 | 59.2 |
| on Road/Neutral Site | 6 | 35 | 288 | 5.8 | 48.0 |
| in Wins | 5 | 35 | 342 | 7.0 | 68.4 |
| in Losses | 7 | 35 | 301 | 5.0 | 43.0 |
| vs. Conference | 9 | 56 | 524 | 6.2 | 58.2 |
| vs. Non-Conference | 3 | 14 | 119 | 4.7 | 39.7 |
| vs. Ranked (AP) | 3 | 21 | 202 | 7.0 | 67.3 |
| vs. Unranked (AP) | 9 | 49 | 441 | 5.4 | 49.0 |
| vs. FBS (I-A) | 12 | 70 | 643 | 5.8 | 53.6 |
| vs. FCS (I-AA) | 0 | 0 | 0 | - | - |
| vs. FBS Winning | 7 | 44 | 404 | 6.3 | 57.7 |
| vs. FBS Non-Winning | 5 | 26 | 239 | 5.2 | 47.8 |
| vs. FBS Power 5 | 10 | 63 | 570 | 6.3 | 57.0 |
| vs. FBS non-Power 5 | 2 | 7 | 73 | 3.5 | 36.5 |
| in August/September | 5 | 37 | 329 | 7.4 | 65.8 |
| in October | 3 | 20 | 198 | 6.7 | 66.0 |
| in November | 4 | 13 | 116 | 3.3 | 29.0 |
| in December/January | 0 | 0 | 0 | - | - |