Not sure how tie breakers go but there could be a large logjam at the top of the conference..
Oregon is likely to win out right now. Hardest game is @ Michigan in a couple of weeks (but watch out for top 5 wrecker Purdue this week).
It looks as if Penn State and Ohio State are going to be playing for that 2nd spot. That game on November 2nd is going to be huge. If OSU wins, I think they carry that momentum and beat both Indiana and Michigan at home to solidify the birth.
If Penn State wins, cake walk to the title game. Could they still slip up? Sure, but chalk puts them in.
Indiana is also interesting. If Indiana can win the next three, which one is against Michigan in Bloomington, then they'll play Ohio State the next week to go to the title.
You could also have a crazy scenario where there are four 8-1 teams tied for that second spot in Penn State, Ohio State, Indiana and Iowa.