14. Bill Peterson
Peterson’s college exploits made him one of the most appealing coaches. Finally, the Houston Oilers decided that they’d give him a shot at the pro level. They outbid the Denver Broncos and handed him a massive 10-year contract. This was a disastrous decision because Peterson was terrible. It also cost them an arm and a leg to fire him.

Owner Bud Adams told the world that Peterson would be with the Oilers until he retired (via New York Times). In the end, he survived for just two seasons. Somehow, the Oilers put together back-to-back 1-15 records. This also ruined his credibility as a coach and he retired after the Oilers fired him. He had a remarkable winning percentage of just .053. It’s a shame it went so badly for him.