We seem to already forget how timely he was at making big plays. I am not a defensive expert but our DBs seem to be trained that staying behind the defender and making a big hit is more important than making a play on the ball. I'm not 100% sure without the game film view but it is frustrating how often they have good coverage but don't make a play.
Also, our defensive line is average or below average. We don't have anyone who can win one-on-one matchups.