Despite missing the playoffs in 2010, the Chargers had one of the best offenses and defenses last season. They will miss defensive coordinator Ron Rivera, but the Chargers have a solid enough defensive foundation that his departure won't be devastating. As for the Chargers offense, they have Philip Rivers at quarterback and that's enough to make them competitive. If second-year running back Ryan Mathews can stay health and provide some balance for the offense, San Diego will be much better. Also, wide receiver Vincent Jackson will be ready to play in week one, which will be a welcomed sign for Rivers. The Chargers will be very competitive in the AFC.