2018 Pac-12 Conference Leaders Opponent First Downs - Games in October Only through 01/07/2019
| Name | G | Rush | Pass | Penalty | Total | Total/G | |
|---|---|---|---|---|---|---|---|
| 1 | Utah | 4 | 20 | 40 | 12 | 72 | 18.0 |
| 1 | Stanford | 3 | 20 | 43 | 3 | 66 | 22.0 |
| 3 | Washington State | 3 | 22 | 39 | 9 | 70 | 23.3 |
| 4 | Oregon | 3 | 25 | 42 | 7 | 74 | 24.7 |
| 5 | Arizona State | 3 | 26 | 33 | 9 | 68 | 22.7 |
| 6 | Arizona | 4 | 29 | 49 | 11 | 89 | 22.3 |
| 7 | Colorado | 4 | 30 | 44 | 11 | 85 | 21.3 |
| 8 | California | 4 | 31 | 26 | 7 | 64 | 16.0 |
| 8 | Washington | 4 | 31 | 39 | 3 | 73 | 18.3 |
| 8 | Oregon State | 3 | 31 | 40 | 3 | 74 | 24.7 |
| 11 | USC | 3 | 33 | 26 | 5 | 64 | 21.3 |
| 12 | UCLA | 4 | 47 | 40 | 7 | 94 | 23.5 |