Following their 31-24 loss to the Illinois Fighting Illini at Memorial Stadium in week four, the Nebraska Cornhuskers are no longer ranked in the Associated Press's Top 25 rankings or the US LBM Coaches Poll.

Another weekend of college football action is in the books and as a result, ESPN's Football Power Index has once again re-ranked the Big Ten Conference.

Ohio State remains firmly atop the Big Ten Power Rankings, but two familiar rivals made moves over the weekend.

As expected, Ohio State remains the class of the conference, however, with Oregon and Penn State right behind. With that, here are the Big Ten Power Rankings after week 4 of the season. This week: at Michigan State,

Michigan got a big win against USC on Saturday, but so did many other Big Ten teams. Here are this week’s Big Ten Power Rankings:

Penn State is coming off an impressive victory over Kent State, where they held the Golden Flashes to a goose egg on the scoreboard. The win didn't reward the Nittany Lions with much movement in the national polls;