Week 4 of Michigan high school football was chaotic. Nine top 25 teams lost week, including No. Rockford and No. 3 De La Salle.So there is a shakeup in the High School on SI Michigan football top 25 rankings.

When the dust settled, four teams in the top five of MLive’s rankings went down, including Rockford falling to Hudsonville, Warran De La Salle losing to Toledo Central Catholic, Clarkston coming up short against Rochester Adams and Detroit Cass Tech dropping an overtime thriller against Detroit King.

In addition to our USA TODAY Network Indiana high school football poll, which is voted on by a statewide group of media members, we are also unveiling an IndyStar Super 25 this season, which will rank the top-25 teams in the state regardless of class.

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

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.

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;

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,