The Carolina Panthers signed former Cincinnati Bengals safety Tom Nelson.
Rookie safety Tre Boston is on the physically unable to perform list.
Nelson, 27, has played in 24 career games.
He recorded 25 tackles in a dozen games with three starts for the Bengals in 2009.
Nelson has also played for the Philadelphia Eagles and Chicago Bears.
Follow me on Twitter: @RavensInsider
Aaron Wilson covers the Ravens for The Baltimore Sun
DEC 25 Joel Corry
Several deserving players were left off this year’s rosters for a variety of reasons.
DEC 23 Jeff Fedotin
Playoff-bound Detroit notches 11th win in sloppy performance.
DEC 19 Joel Corry
A look at how the Chicago Bears could swing a trade to deal their high-priced quarterback.