Ahtyba Rubin is a classic NT/DT as he takes on double teams and helps keep the linebackers clean.  That is his greatest skill as he doesn’t make a lot of plays.  Rubin played in 24 games (20 starts) at Iowa State and he made 76 tackles, 8 tackles for a loss and had 2.5 sacks.  He stands at 6’2″, 321 pounds so he has the size to be effective as long as he keeps low.  He will be buried on the Browns’ depth chart as a rookie.