There is a fun tradition among sports fans to joke about whether or not the best team in college football could beat the worst team in the NFL, or if the worst team in the NBA could defeat the best team in college basketball. So it's only natural to think that some of those college coaches could coach in the pros as well.
Brad Stevens left Butler for the Boston Celtics in 2013. One season later, they were back in the playoffs and haven't missed them since. Billy Donovan left Florida to take over on the bench in Oklahoma City and led the Thunder to the Western Conference Finals in his first season.