2021 Pac-12 Conference Leaders Passing Defense - Games in October Only through 01/10/2022
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Washington | 4 | 95 | 62 | 65.3 | 482 | 5.1 | 2 | 5 | 104.30 | 23.8 | 120.5 |
| 2 | Washington State | 5 | 148 | 90 | 60.8 | 1005 | 6.8 | 4 | 5 | 120.01 | 29.6 | 201.0 |
| 3 | Oregon | 4 | 160 | 94 | 58.8 | 945 | 5.9 | 9 | 2 | 124.42 | 40.0 | 236.3 |
| 4 | California | 4 | 114 | 69 | 60.5 | 769 | 6.7 | 6 | 5 | 125.80 | 28.5 | 192.3 |
| 5 | Arizona State | 4 | 137 | 86 | 62.8 | 1072 | 7.8 | 6 | 6 | 134.19 | 34.3 | 268.0 |
| 6 | Stanford | 4 | 104 | 62 | 59.6 | 796 | 7.7 | 4 | 1 | 134.68 | 26.0 | 199.0 |
| 7 | UCLA | 5 | 153 | 105 | 68.6 | 1185 | 7.7 | 5 | 4 | 139.24 | 30.6 | 237.0 |
| 8 | Colorado | 4 | 134 | 87 | 64.9 | 966 | 7.2 | 8 | 3 | 140.71 | 33.5 | 241.5 |
| 9 | Utah | 4 | 147 | 94 | 63.9 | 1111 | 7.6 | 8 | 2 | 142.68 | 36.8 | 277.8 |
| 10 | Oregon State | 4 | 134 | 88 | 65.7 | 1070 | 8.0 | 9 | 2 | 151.91 | 33.5 | 267.5 |
| 11 | USC | 4 | 114 | 76 | 66.7 | 1020 | 8.9 | 6 | 2 | 155.68 | 28.5 | 255.0 |
| 12 | Arizona | 4 | 99 | 60 | 60.6 | 860 | 8.7 | 9 | 2 | 159.54 | 24.8 | 215.0 |