USC's Caleb Williams named Pac-12 Football Offensive Player of the Week, presented by Nextiva for Week Two, for Monday, Sept. 12. Follow Pac-12 football this season with the Pac-12 Now App. Download the Pac-12 Now App today and set alerts for Pac-12 football to make sure you never miss a moment of the action. Pac-12 Now is available today in your app store for iOS, Android, and Apple TV.