TCU @ Baylor, Missouri @ Arizona State, Oklahoma State @ Iowa State etc... all killed BYU's ratings.
Hawaii @ SJSU pulled a 1.0 Friday night rating BYU versus TCU only pulled a .9
Again, Friday night games, when they are the only game on the ESPN networks generally get very good numbers.
Even BYU's top Friday night numbers (UCF 1.6) were well below Missouri @ ASU (2.0).
BYU's numbers have been nothing to crow about.