Now, this has significance to the Cardinals in a couple of ways.
One is just the historic nature of it. Since the Cardinals came to Arizona, their fired head coaches have not generally gotten another head coaching shot in the NFL. Aside from Whisenhunt now, Joe Bugel is the only former Cardinals head coach to get another head coaching job in the league since coming to Arizona.
Gene Stallings went on to be the head coach at Alabama, and won a title there.
Hank Kuhlmann, after his 0-5 interim coach run, was later the offensive coordinator for Tampa Bay and special teams coach for the Colts.
Joe Bugel, after getting fired in 1993 by Arizona, became assistant head coach of the Raiders in 1995 and was promoted to head coach in 1997. He was also an offensive line coach after that for the Chargers and assistant head coach for the Redskins.
Buddy Ryan retired after being fired by the Cardinals.
Vince Tobin was the defensive coordinator for the Lions after getting let go by Arizona and is now a special assistant for the Packers.
Denny Green never worked in the NFL again, but did coach in the UFL for a bit.
Now, the hiring also could affect the current Cardinals staff.
Mike Jurecki believes that the Titans will ask the Cardinals for permission to speak to John Lott, the team's strength and conditioning coach since 2007. He came over with Ken Whisenhunt when he was hired by the Cardinals. Lott also worked with Whisenhunt when both were members of the New York Jets staff.
Whisenhunt was considered the favorite to land the vacant job with the Detroit Lions, but Tennessee apparently made a better offer.
Some believe that the Lions would be a better situation, as they already have a quarterback in Matthew Stafford. However, Whisenhunt wants a 3-4 defense and the Lions reportedly did not want to change their defensive scheme. Money and control were also likely factors, as well as the organization and location.
It will be interesting to see moving forward how Whiz does with Tennessee. I for one hope he finds great success there. Although it ended poorly here, he treated us with the best two-year period the Cardinals have had here in Arizona.