Williams has four straight seasons of solid PFF grades, and two of those years were outstanding seasons with a mark of 88.2 or better. He is a complete safety who can defend the run as well as make an impact in coverage.
The fact that he could bounce back from being posterized by Stefon Diggs for the Minneapolis Miracle early in his career also shows the kind of mental strength he has, which can only be applauded. There are certainly safeties out there with bigger reputations, but there are few with better consistent play.