College football has always been a what-have-you-done-lately business, but these days — fueled by nonstop hot-seat coverage and constant social-media scrutiny —- a coach’s stock rises and falls like a roller coaster. When Jim Harbaugh took a pay cut from Michigan after the 2020 season, getting another chance to be an NFL head coach seemed like a long shot for him. Now, coming off a national championship, he has landed one of the best NFL jobs available. It is doubtful Kalen DeBoer would have even been considered as a replacement for Nick Saban a year ago. Now he's the Alabama coach.