Despite the flurry of offseason changes that have fallen upon the San Francisco 49ers, defensive coordinator Eric Mangini's defensive squad appears to remain in good shape heading into the 2015 NFL season.
It's a bit of a conundrum. How can a defense—one that lost defensive end Justin Smith, cornerbacks Chris Culliver and Perrish Cox and linebackers Patrick Willis and Chris Borland—wind up replicating the same level of play for which the 49ers have been known for a number of years now?
But the defense will live up to that standard as long as Mangini has anything to say about it.