| 09/03/05 | hosting | Portland State | 41-14 |
| 09/10/05 | hosting | Boise State | 30-27 |
| 09/17/05 | at | Louisville | 27-63 |
| 09/24/05 | hosting | Arizona State | 24-42 |
| 10/01/05 | hosting | Washington State | 44-33 |
| 10/15/05 | at | California | 23-20 |
| 10/22/05 | at | UCLA | 28-51 |
| 10/29/05 | hosting | Arizona | 27-29 |
| 11/05/05 | at | Washington | 18-10 |
| 11/12/05 | hosting | Stanford | 17-20 |
| 11/19/05 | at | Oregon | 14-56 |