
14. Marc Trestman
After finishing 8-8 in his first season, positivity surrounded Trestmann at the start of his second year. But it was disastrous. The Bears started 3-3 but went 2-8 over their remaining games with an appalling defense. Trestmann rattled some of his players by restructuring the lockerroom system to force them to communicate differently.

It didn’t help on the field because his poor calls led them to blow big leads, like when Robbie Gould missed a field goal against the Vikings. In sum, Trestmann simply failed to inspire or structure his team in a coherent way. His handling of star quarterback Jay Cutler also rattled other members of the roster. Finally, after a series of horrific losses, the Bears cut ties with him.