Posted by ESPN.com's Adam Rittenberg
The Big Ten has three teams in the top 15 and two others lingering just outside the AP Top 25 poll.
Ohio State remains at No. 9 despite its third consecutive victory by two touchdowns or more. It's clear the Buckeyes have an uphill battle to impress the voters, but they can help their cause this week against Wisconsin. But hey, at least they're not behind Oklahoma any more.
Iowa moves up a spot to No. 12 despite a too-close-for-comfort victory against Arkansas State. I'm a little surprised the Hawkeyes didn't pay a price for a lackluster performance, but there wasn't much fluctuation between Nos. 10-20. Penn State also moves up a spot to No. 14.
Michigan is out of the rankings after its overtime loss Saturday at Michigan State. The Wolverines likely will jump in if they upset Iowa this week. Wisconsin is the top team in the others receiving votes category. The undefeated Badgers will be in my power rankings this week, and they can crack the real poll by upsetting Ohio State in Columbus.