Marcus Mariota is proving to be a quick study with a new coach installing yet another offensive system for the Tennessee Titans. Maybe Mike Vrabel will stick around for a while for Tennessee. The Titans had a memorable opening series in Vrabel's preseason debut as coach before the Packers pulled away in a matchup of the backups for a 31-17 win on Thursday night. read more http://www.espn.com/nfl/recap?gameId=401030936