I wonder how badly his injury is affecting him. Since the SF game, Hughes has 1 sack in 7 games. In 2 of those 7 games Hughes failed to record a single stat, putting up 0's in tackles, assists or sacks in the NE and Oak games. Has he peaked? Is he that injured? Rex screwing him up too? Either way, huge concern going forward with Hughes in my opinion.
You can go even further back, Hughes has 1 sack in 9 games, since Week 4. He's supposed to be our best pass rusher.