Thomas was a fifth-round draft pick by the San Diego Chargers in 2010. In four seasons with the Chargers, Thomas tallied 51 tackles, three pass deflections and one interception.
He started 10 of the 16 regular season games he appeared in during the 2013 season.
Thomas played college football at the University of North Carolina.
Follow me on Twitter: @RavensInsider
Aaron Wilson covers the Ravens for The Baltimore Sun.