I was looking over an article Bucky brooks wrote at the start of preseason, about how the big nickel is becoming trendy as a way to match up against 2wr, 2 te, 1 rb formations, something i suspect to see a lot of with the chargers talented te's such as gates, and pretty good wr's and an injured starting rb. in it, he specifically mentions that aaron williams fits the mold well as a big, physical safety who still has coverage skills. this might be how we play it.