8. Gus Bradley
Now working as defensive coordinator for the Los Angeles Chargers, it’s clear where Bradley’s talents lie. He’s proven to be very good at his current job, but don’t make him a head coach. In short, it won’t end well for your franchise, as Jacksonville Jaguars fans found out to their despair.

Over the course of four seasons, he posted a brutal record of 14 wins and 48 defeats. That is so bad you could almost celebrate it. Bradley created a losing culture as he overstayed his welcome. Even worse, he has one of the bleakest winning percentages ever for a coach who reached 60 games. Why did they wait so long to get rid of him?