I hear a lot of people saying that we shouldn't be hard on Roy Williams because he is a SS and they are always mismatched with TE's.
While in the past that statement has been true. Today that is not an excuse. I say that for two reasons: one he is in fact a physical specimen, and two the league is trending towards acquiring SS's with good coverage skills.
Roy is actually one of the most physically gifted safeties in the league. Roy weighs 221 (he was even 230+ last year) and can run as fast as the fastest TE's in the league barring Vernon Davis. He is actually not a physical mismatch with TE's. Darren Woodson has even said Roy, when he wants to be, is actually good in coverage. The problem is "when he wants to be". When he came into the draft the knock on him was that he wasn't dedicated to the game, and that is what we see now. He doesn't put the necessary hours in the film room, and Nate Newton had said recently he hasn't seen Roy complete a full day of practice since training camp. What does this result in? A player who is not mentally prepared on game day. He has said multiple times that football doesn't come first in his life. And that is all well and good, but to be successful in the NFL you have to put football first in your life. Carrie Underwood found that out the hard way. ;)
Secondly, SS's like Roy and Lynch are becoming a thing of the past. Scouts are putting a premium on pass coverage. Thats why you are seeing guys like Weddle who was projected to be a corner or FS play SS, or even Laron Landry who was considered to have superior coverage skills in the centerfield now play SS for the Skins. This is a reaction to the pass happy offenses of today's NFL. Its great Roy is so good against the run, but that just doesn't cut it anymore.