15. Herm Edwards
It all started off so well for Edwards, but better coaches then found him out. After an excellent nine-year career in the NFL, he decided to move to the sidelines. After a few years in college and NFL assistant, the New York Jets decided to hire him despite his total lack of head coach experience.

They did make the playoffs in his first couple of seasons but steadily got worse and worse. Finally, they went 4-12 in his last season before they fired him. He then moved to the Kansas City Chiefs and went 2-14 in an appalling year. To be fair, he is doing a reasonable job with Arizona State in the Pac-12 but he failed in the NFL.