Nixon has good size and athleticism. That combined with a familiarity with the ZBS IMO should put him ahead of where guys like Compton and Hurt we're as rookies.
What I can't figure out on the OL is whether the addition of Matthews indicates a lack of confidence in LeRibeus.
The Redskins now have all three interior OL signed for multiple years.
One would think a high pick like LeRibeus would in most cases get a shot at playing before the last year of his rookie deal, but it seems he is on the bench unless there are major injuries.