Davis/Williams worked with the old coaching staff that Mackovic/Brown had, which I think played a big part in it. McWhorter's scheme and players are different then the previous coaches.
Dockery is a starter for Washington who has done pretty decent. I know Scott, a rookie, started some games for the Lions this year at RT, but I'm not sure how he did, I didn't see the games (it was against Chicago, maybe Miami, and someone else).