The Chargers defense couldn't get off the field last season.
San Diego was last in the NFL at third down efficiency, a major reason the Chargers sat out the playoffs for the second straight year.
''You can't win football games by being last on third downs,'' cornerback Quentin Jammer said.
Defensive coordinator Greg Manusky lost his job after the season. Longtime linebackers coach John Pagano took charge of the defense and the front office drafted defensive players with its first three selections. San Diego also signed two NFL veterans to start on defense.
''I think the pass rush is the key to everything,'' said outside linebacker Shaun Phillips. ''If you can rush the passer, it eliminates a lot of mistakes. Whether there's a breakdown in the secondary or not, if you get a sack, it doesn't really matter. If I was a coordinator, I would build my teams from front to back because I believe if you have a dominant pass rush, you have a chance.''
The Chargers (No. 16 in the AP Pro32)...