Despite hiring a new head coach and a new GM, the San Diego Chargers decided to retain defensive coordinator John Pagano this past offseason.
After taking over for Greg Manusky at the end of the 2011 season, Pagano oversaw improvements by the defense in 2012. The Chargers ranked ninth in total yards allowed last season, up seven spots from 2011.
However, key veterans Quentin Jammer, Antoine Cason, Shaun Phillips, Takeo Spikes, Aubrayo Franklin, and Antonio Garay are all gone.
So, as much as the offense will look different in 2013, so will the defense.