The NFL regular season wrapped up, but that just means plenty of teams are officially kicking off their offseason. And several of the struggling ones are beginning with massive changes up top, specifically at the head coach position.

Jacksonville Jaguars coach Doug Pederson and general manager Trent Baalke never developed enough synergy, if any at all. Pederson thought talent was Jacksonville's bigger issue as losses mounted; Baalke believed coaching was the problem.

Black Monday in the NFL is officially underway, and the Jacksonville Jaguars are at the center of the annual tradition that sees coaching hot seats turn into vacancies following the regular season’s conclusion.