During one of the craziest weeks of football in recent memory, we saw the end of an era for legends like Bill Belichick and Nick Saban.
Belichick, 71, and Saban, 72, are easily two of the greatest coaches that the sport has ever seen. Next season, college football will look very different without Saban coaching Alabama. Meanwhile, the NFL will also look very different without Belichick coaching the Patriots.
Both teams will have huge decisions about how to fill these massive shoes. While there are some interesting candidates for the gig in New England and the job in Tuscaloosa, can either live up to the reputation that Belichick and Saban built?
We looked back at some of the most legendary coaches in football history, both in the NFL and in college football, to learn how these replacements have typically fared.
The results are a fairly mixed bag but if there is one thing we learned, it is that it is not easy to replace someone as accomplished as either of these two Hall of Fame-caliber coaches.