On January 1, the Detroit Lions fired head coach Jim Caldwell, but Detroit made a pretty big statement by terminating offensive line coach Ron Prince at the same time. When all other coaches and assistants still had a chance to return in 2018, the Lions made sure they were done with Prince, regardless of who their new head coach would be.
When all was said and done, long-time offensive line coach Jeff Davidson was hired in his place. Davidson has been coaching in the NFL since 1995, with a focus on the offensive line since 1998.