Baltimore Sun reporter Ken Murray ranks the best defensive tackles in the NFL draft:1. B. J. Raji, Boston College: Great fit for 3-4 defense as 337-pound run-stuffer.2. Peria Jerry, Mississippi: Disruptive force; could play 4-3 (tackle) or 3-4 (end) schemes.3. Ziggy Hood, Missouri: Athletic tackle who gets good push into the pocket.4. Ron Brace, Boston College: Overshadowed by Raji, is quick and disruptive.5. Fili Moala, USC: Underrated, athletic force.Ravens' needs: Kelly Gregg is expected to make a full recovery, and Haloti Ngata is Pro Bowl caliber. The Ravens don't have a need at the position, but a prospect with the right stuff could be worth a late-round pick.Also see:.