The Ravens were in the market for a safety with James Ihedigbo not expected to re-sign.
Stewart, an undrafted free agent out of South Carolina in 2010, has played his entire four-year career with St. Louis. The 5-foot-11, 214-pound defensive back has appeared in 53 career games (19 starts), recording 141 tackles (94 solo), four sacks, one interception (returned for a touchdown), 15 passed defensed, three forced fumbles and one fumble recovery in his career.
Stewart's best season came in 2011 under Ravens secondary coach Steve Spagnuolo, St. Louis' head coach at the time. Stewart finished with 91 tackles (55 solo), three sacks and one interception in 15 games (13 starts) that year. Last season, he played in 13 contests (six starts), racking up 36 tackles (30 solo), four passes defensed, one forced fumble and one fumble recovery.