It's the nightmare coaches and fans share. How do you survive when you're starting quarterback goes down?
Take last season. Florida State and Michigan had high hopes for 2017. The Seminoles were third in the preseason Associated Press Poll while the Wolverines were 11th. Each were considered College Football Playoff favorites in some capacity.
Or at least they were until their quarterbacks got hurt. FSU lost Deondre Francois to a season-ending knee injury in the first game and were forced to start true freshman James Blackman, and finished 7-6. Michigan went through three quarterbacks because of injuries and finished 8-5.