The Ravens continued to tinker with their secondary today as they placed rookie safety Christian Thompson on injured reserve and elevated safety Anthony Levine to their 53-man roster.
Levine had been on the Ravens' practice squad. Levine, 25, spent the majority of the 2010-11 seasons on the practice squad of the Green Bay Packers and has yet to play in an NFL game.
Thompson, a fourth-round pick, appeared on special teams in seven games this season. He was put on injured reserve with a knee injury.