Pac-12 power rankings: CFP thoughts and a look at the league

Six Pac-12 teams still harbor some hope of playing for a conference championship.

Before we get to the power rankings, I’ve got a few quick thoughts on Washington remaining at No. 5 in Tuesday’s updated College Football Playoff rankings.

The top four — Ohio State, Georgia, Michigan and Florida State — remain unchanged. Oregon is still No. 6, one spot behind UW.

Here’s what else to know:

• Washington’s 52-42 victory over USC knocked the Trojans out of the rankings; they were No. 20 last week. However, Arizona debuted in the rankings at No. 21, giving the Huskies a pair of top-25 victories. Interestingly enough, Arizona and USC have the same number of losses (three) and the Trojans beat the Wildcats head-to-head, albeit at home in triple overtime. They’ve gone in different directions since.