'"He’s really an unusual guy," Bills coach Rex Ryan said of Mack. "I mean, some guys are speed guys, but some don’t play with power. Some guys are just power guys, but this guy can do it all. He can truck you, he can run around you, he’s got moves, he’s creative with his pass rush. Him and the Von Miller guy, I think, are the best in the league right now. So yeah, it’s pretty much a nightmare."'