9. Josh McDaniels
McDaniels’ name still makes Denver Broncos fans shudder. Overall, he brought the franchise to its knees with a number of appalling decisions on and off the field. He mangled their offense by eradicating their zone blocking scheme and producing the second-worst offensive line in the NFL. Then there were shocking trades and draft selections that reduced the overall quality of the roster.

The videotaping scandal rocked the NFL but ultimately results determined McDaniels’ fate. Jay Cutler didn’t trust him and left. Brandon Marshall fell out with McDaniels who traded him away. Finally, after going 3-9 in his second season, the Broncos fired him. It was past that time because McDaniels had run the franchise into the ground.