2018 Pac-12 Conference Leaders Passing Defense - Games in October Only through 01/07/2019
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | California | 4 | 98 | 57 | 58.2 | 587 | 6.0 | 2 | 5 | 105.02 | 24.5 | 146.8 |
| 2 | USC | 3 | 101 | 62 | 61.4 | 677 | 6.7 | 5 | 1 | 132.06 | 33.7 | 225.7 |
| 3 | Arizona State | 3 | 92 | 67 | 72.8 | 830 | 9.0 | 6 | 0 | 170.13 | 30.7 | 276.7 |
| 4 | UCLA | 4 | 124 | 70 | 56.5 | 820 | 6.6 | 4 | 6 | 112.97 | 31.0 | 205.0 |
| 5 | Oregon State | 3 | 105 | 71 | 67.6 | 983 | 9.4 | 10 | 0 | 177.69 | 35.0 | 327.7 |
| 6 | Oregon | 3 | 109 | 73 | 67.0 | 755 | 6.9 | 8 | 4 | 142.04 | 36.3 | 251.7 |
| 7 | Washington State | 3 | 113 | 77 | 68.1 | 814 | 7.2 | 5 | 0 | 143.25 | 37.7 | 271.3 |
| 8 | Washington | 4 | 122 | 79 | 64.8 | 769 | 6.3 | 5 | 2 | 127.94 | 30.5 | 192.3 |
| 8 | Colorado | 4 | 132 | 79 | 59.8 | 1000 | 7.6 | 8 | 4 | 137.43 | 33.0 | 250.0 |
| 10 | Utah | 4 | 151 | 82 | 54.3 | 923 | 6.1 | 4 | 6 | 106.45 | 37.8 | 230.8 |
| 11 | Stanford | 3 | 116 | 83 | 71.6 | 990 | 8.5 | 4 | 2 | 151.17 | 38.7 | 330.0 |
| 12 | Arizona | 4 | 148 | 94 | 63.5 | 1073 | 7.3 | 8 | 5 | 135.49 | 37.0 | 268.3 |