Arizona lost to BYU, Northern Arizona, and San Diego State.
Arizona State lost to BYU, Eastern Michigan, and Fresno State.
California lost to Nevada.
Colorado lost to Air Force.
Oregon State lost to Utah State.
Stanford lost to BYU and Sacramento State.
UCLA lost to Fresno State.
USC lost to BYU and Tulane.
Utah lost to BYU and San Diego State.
Washington lost to Montana.
Washington State lost to BYU, Central Michigan, Fresno State, and Utah State.
Plus there were several close calls where they squeaked past Idaho, Southern Utah, and a couple other opponents of that caliber.