The Detroit Lions have announced they've added Tony Oden as an assistant defensive backs coach and Matt Raich as a defensive quality control coach.

The team website says Raich "probably" will work with the secondary. He spent three seasons working with new defensive coordinator Teryl Austin in Arizona, and more recently was the linebackers coach for Duquesne University in 2013.

Oden, who will assist new defensive backs coach Alan Williams, spent the past two seasons as Tampa Bay's defensive backs coach. He worked on a staff with Bill Sheridan, who is the Lions' new linebackers coach.

He was the Saints' assistant defensive backs coach from 2006-10, and their defensive backs coach in 2011.

Detroit's staff is nearly complete. The biggest remaiing question is whether the Lions will hire a quarterbacks coach for Matthew Stafford.

Head coach Jim Caldwell and offensive coordinator Joe Lombardi both have extensive experience as quarterback coaches.