Mike Vrabel hands coaching duties to assistant for Titans' preseason opener

Mike Vrabel will cede coaching duties to assistant Terrell Williams for the Titans' first preseason game.
Williams will begin his head coaching role on Friday as the Titans prepare to play the Bears.
Vrabel will act as an assistant coach to Williams during the game.
Williams is in his sixth season with the Titans but has never been a head coach before.
This is the first time Vrabel has handed over coaching duties for a game as Titans head coach.