(Undated)  --  The Oregon Ducks are down a few notches in this week's Amway Coaches' college football poll.  Oregon fell from fifth to 13th, following Saturday night's 31-28 loss to Michigan State.  The only PAC-12 school in the Top Ten this week is USC, who moved up from tenth to seventh.  UCLA is ranked 12th, Arizona is 19th, and Utah is 21st.