Sean Payton has earned his reputation as one of the NFL's most brilliant offensive minds during 10-plus years as head coach of the New Orleans Saints.
But during that same decade, Payton also has burned through four defensive coordinators. He is now on No. 5, Dennis Allen.
Most of them have been fired because the defense just plain stunk -- it set the NFL record for yards allowed in a season under Steve Spagnuolo in 2012 and set NFL records for TD passes allowed and opponents' passer rating last season before Rob Ryan was fired in November.