2. Jim Caldwell
Jim Caldwell took over the offensive coordinator duties in week 14 of the 2012 season. The Ravens did not finish out the regular season well, but heated up in the playoffs.
A team that is known for defense was led by their offense to a Super Bowl win. Caldwell helped produce one of the best runs by an NFL quarterback in playoff history. Joe Flacco played lights out. He tied Joe Montana as the only quarterback to throw 11 touchdowns and 0 interceptions in the playoffs. It took some luck and destiny, but ultimately it was Flacco and the offense that did the job. Caldwell’s success with the Ravens earned him a head coaching job with the Detroit Lions the following season.
I rank Caldwell as #2 because he spent such little time in Baltimore. His short tenure was very successful and it would have been interesting to see what the offense could have done if he stayed.