Since the 2015 Super Bowl season, Rivera has a 29-31 record, including a 7-15 mark against the NFC South. I'm thinking this factored in heavily in the decision to let him go. I also think a change of scenery would do him a lot of good.If anyone cares, Rivera was the second most winningest coach in NFC South history after Payton. He was also the one with the second longest tenure after Payton. Again.