2025 Big Ten Conference Leaders Opponent Penalties - Games in October Only through 10/04/2025
| Name | G | Pen. | Yards | Pen./G | Yards/G | |
|---|---|---|---|---|---|---|
| 1 | Northwestern | 1 | 5 | 67 | 5.0 | 67.0 |
| 2 | Maryland | 1 | 7 | 64 | 7.0 | 64.0 |
| 3 | Illinois | 1 | 8 | 61 | 8.0 | 61.0 |
| 4 | Nebraska | 1 | 5 | 45 | 5.0 | 45.0 |
| 5 | Michigan State | 1 | 6 | 44 | 6.0 | 44.0 |
| 6 | UCLA | 1 | 6 | 43 | 6.0 | 43.0 |
| 7 | Washington | 1 | 5 | 39 | 5.0 | 39.0 |
| 8 | Michigan | 1 | 5 | 35 | 5.0 | 35.0 |
| 8 | Penn State | 1 | 5 | 35 | 5.0 | 35.0 |
| 8 | Minnesota | 1 | 4 | 35 | 4.0 | 35.0 |
| 11 | Purdue | 1 | 4 | 31 | 4.0 | 31.0 |
| 12 | Ohio State | 1 | 2 | 12 | 2.0 | 12.0 |
| 13 | Wisconsin | 1 | 1 | 10 | 1.0 | 10.0 |