When the Pittsburgh Steelers defense first took the field to start the 2015 regular season, there were still many questions being asked, not about how the unit would perform, but simply how it would look, and the manner in which it would be run regarding scheme and personality.
New defensive coordinator Keith Butler was not hesitant to tease a myriad of different looks and concepts on the defensive side of the ball throughout the preseason, certainly giving the Patriots plenty of tape to study, but perhaps the most surprising thing that they saw was just how much it looked like that preseason footage.