Yes, they let Matt Judon walk in free agency. No, they still have not really replaced the top-end talent of Earl Thomas at safety after releasing him last offseason. But this was a top-10 unit last year (seventh in yards, second in points, ninth in DVOA), Don Martindale is one of the best defensive coordinators in the league, and the Ravens are still absolutely stacked everywhere. Calais Campbell, Derek Wolfe, and Brandon Williams up front. Patrick Queen and Malik Harrison up the middle.