The Marrone praise in this thread is puzzling.
Marrone was lucky that Pettine and then Schwartz were available to be the DC when he was hired here. Those two defensive coordinators were the ones responsible for the Bills being competitive while Marrone was here.
Marrone is an "offensive" coach and the offense was a shite-show in both years. He was a supposed offensive line guru, yet the OLine never performed worse than when he was here. He's a horrible game manager who punts/kicks in every opportunity, disregarding percentages.
The Bills went *9-7 in 2014 (supposedly a monumental accomplishment in the eyes of Bills fans) in spite of Marrone, not because of him.