No. 19 Arizona State travels to No. 23 BYU for the first meeting between the two former Western Athletic Conference foes since Sept. 12, 1998. BYU beat Arizona State that day 26-6 in Provo. The Cougars have a chance to go 3-0 against the Pac-12 with a win. They've already beaten Arizona and rival Utah. BYU recently announced it was slated to join the Big 12.