I'd be interested to see if a rookie head coach has ever had such a successful year 1 and gone onto a successful career. we can rule out Belichek I think lol I answered my own question John Harbaugh started off 11-5 in year 1 and later won a SB, currently sits at 85-59 career
Sean Payton, Mike Tomlin, Mike McCarthy. Looks like four letter names are indicative of success...thankfully we have Adam
The Dolphins played the Steelers in the playoffs without their starting QB and missing 5 starters on defense. That team at the end of the year was a shell of the team that was playing well at mid season. New season for everyone.