2018 Pac-12 Conference Leaders Passing Defense - Games vs. Unranked Teams Only (AP Poll) through 01/07/2019
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | UCLA | 8 | 251 | 153 | 61.0 | 1995 | 7.9 | 14 | 9 | 138.96 | 31.4 | 249.4 |
| 2 | Oregon State | 9 | 270 | 162 | 60.0 | 2055 | 7.6 | 20 | 2 | 146.89 | 30.0 | 228.3 |
| 3 | USC | 9 | 283 | 164 | 58.0 | 1749 | 6.2 | 13 | 3 | 122.90 | 31.4 | 194.3 |
| 4 | California | 11 | 311 | 176 | 56.6 | 1780 | 5.7 | 11 | 18 | 104.75 | 28.3 | 161.8 |
| 5 | Colorado | 10 | 318 | 177 | 55.7 | 2320 | 7.3 | 20 | 7 | 133.30 | 31.8 | 232.0 |
| 6 | Utah | 10 | 326 | 185 | 56.7 | 1986 | 6.1 | 12 | 11 | 113.32 | 32.6 | 198.6 |
| 7 | Arizona State | 11 | 356 | 216 | 60.7 | 2662 | 7.5 | 17 | 9 | 134.19 | 32.4 | 242.0 |
| 7 | Stanford | 10 | 356 | 203 | 57.0 | 2522 | 7.1 | 6 | 11 | 115.91 | 35.6 | 252.2 |
| 9 | Washington State | 12 | 376 | 219 | 58.2 | 2606 | 6.9 | 16 | 11 | 124.66 | 31.3 | 217.2 |
| 10 | Oregon | 11 | 377 | 203 | 53.8 | 2575 | 6.8 | 19 | 14 | 120.42 | 34.3 | 234.1 |
| 11 | Arizona | 11 | 384 | 237 | 61.7 | 2752 | 7.2 | 20 | 7 | 135.46 | 34.9 | 250.2 |
| 12 | Washington | 12 | 385 | 244 | 63.4 | 2258 | 5.9 | 9 | 9 | 115.69 | 32.1 | 188.2 |