Michigan coach Jim Harbaugh and Nebraska coach Scott Frost are firmly on the hot seat heading into the 2021 college football season.

Both Big Ten coaches landed on CBS Sports’ annual hot seat rankings. They’re joined by seven other coaches across college football who need to show serious improvement in order to retain their job moving forward.

Harbaugh signed an extension this past offseason, but it includes a pay cut and significant incentives. He’s 49-22 in six seasons as Michigan’s head coach, but the Wolverines went 2-4 last season.

Last year’s disaster paired with Harbaugh’s struggles vs. Ohio State have landed him on the hot seat. Here’s CBS Sports’ analysis:

After six years of being slapped around by Ohio State, the burden is on Harbaugh, who still hasn’t so much as won a division as an FBS coach. The extension was signed in time to land a class that included five top 100 players. Now the task is developing a difference-making QB and beating OSU, neither of which Harbaugh has been able to accomplish yet. If he does, it would be one of the greatest rallies of Captain Comeback’s career.

For Frost, the climb might be even tougher. He’s yet to win more than five games with the Huskers. He owns a 12-20 record overall and 9-17 record in conference play through three seasons.

To make matters worse for Frost, Nebraska AD Bill Moos is retiring this offseason and will be replaced. Moos is who hired Frost away from Central Florida after the 2017 season.

We never thought it would come to this. Entering his fourth season, the native son/champion/Husker is 12-20. There’s disarray in a program that once bled consistency. Its best player, Wan’Dale Robinson, transferred. Nebraska under Frost has one top-20 recruiting class. Is the average recruit aware of the once-glorious brand? Then there’s the embarrassing Oklahoma fiasco where Frost attempted to back out of the game months before kickoff. So much was expected, which makes this rating difficult. Frost has the makings of a solid coach. We saw it at UCF. Something isn’t clicking. In three seasons, Nebraska has seen Northwestern, Indiana and Minnesota (arguably) pass it by. There is inconsistency at QB. Worst of all, Bill Moos, the AD who hired Frost, is gone. That’s never good for a losing coach. It’s bowl game or bust.

Nebraska faces an incredibly tough schedule this season. The Huskers face Oklahoma, Michigan and Ohio State. They also travel to Wisconsin for the penultimate game of the regular season and have tough road contests vs. Michigan State and Minnesota.

Michigan and Nebraska play on Oct. 9 in Lincoln.