re: best coaching job in the nfl this season? ...

Arians' Cards this year are more a reflection of his incredible roster building and development of talent of the years. He's done nothing overly impressive this season to warrant being COTY. He's basically just managed the most talented roster in the league.

For this year I'd go with Rivera or Belichik. The Panthers have next to nothing on offense, and they've turned into a great unit on that side of the ball in the second half of the season (save for this week). He's also developed a dominant defense. As for Bill, it's pretty much business as usual for him. Their offensive roster is half full of walk-ons and guys they grabbed off the street. He and Tom could make anyone decent in that offense.