The Green Bay Packers underwent many defensive coaching changes, including a new defensive coordinator and several position coaches. The team will implement a new defensive scheme using 4 linebackers, 3 down linemen, and different roles for linebackers and defensive linemen. Key returning and acquired defensive players include linemen Johnny Jolly, Ryan Pickett, Cullen Jenkins and linebackers Aaron Kampman, AJ Hawk, Nick Barnett, and Brady Poppinga. Through free agency and the draft, the Packers added Igor Olshansky, BJ Raji, Everette Brown, Brian Orakpo, and Aaron Maybin.