The key to this game is our defense getting back to the line of scrimmage and set as fast as possible after every play! Mariota is not going to wait and if he sees the defense taking their time, arguing/pointing fingers after a blown play, he is going to push that tempo and snap the ball. The key is to have your defensive schemes designed so as the defense is getting back to the line of scrimmage they are looking at who is calling them and they making those adjustments on the fly.
The defense has to understand, Oregon is going to make some plays and get yards, but limiting both of those to the field between the 20's and forcing field goals will be what helps them win the game. Stay on their assignments and keeping things in front of them and they will be fine. I hate to say it, but kind of like Tressel's old bend but don't break defense. Let them run up and down the field, but don't let them in the endzone!