Marcus Robertson is the new Lions defensive backs coach

The Lions found themselves in need of a new defensive backs coach after Tim Walton took the defensive coordinator job in St. Louis earlier this week and it didn’t take them long to fill it.

The team announced Thursday that Marcus Robertson would be promoted from his assistant defensive backs job to replace Walton. Robertson joined the Lions before last season and spent the previous five seasons as an assistant in Tennessee. Some of those years were spent working with Schwartz and Robertson also played for Schwartz at the tail end of his 10-year playing career with the Oilers and Titans.

Continuity would seem to be a plus to staying in-house, although the Lions secondary wasn’t all that great last year and there’s going to be some changes to the personnel. Safeties Louis Delmas and Amari Spievey and cornerback Chris Houston are set to become free agents and the team has already spoken with former Bills safety George Wilson.

Robertson may not know the names, but he should get better health at least. The top five Detroit defensive backs played a grand total of one game together last year, something that’s not likely to happen again in 2013.