San Diego Chargers quarterback Philip Rivers aims a pass down field as coach Norv Turner, right, watches during practice at the Chargers' training camp Monday, July 23, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers rookie running back Edwin Baker, from Michigan State, looses his grip on the ball while running during practice at the Chargers' training camp Monday, July 23, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers defensive end Kendall Reyes (91) races through a roll of blocking dummies during NFL football practice at the team's training camp, Tuesday, July 24, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers running back Jackie Battle gets direction from a coach during NFL football practice at the team's training camp, Tuesday, July 24, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers quarterback Philip Rivers gives directions before the snap as coach Norv Turner, rear right, looks on during NFL football practice at the team's training camp, Tuesday, July 24, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers wide receiver Phillip Payne pulls in a pass as cornerback Gregory Gatson grabs his face mask during NFL football practice at team's training camp, Tuesday, July 24, 2012, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers wide receiver Taylor Embree makes a diving catch during practice at NFL football training camp, Tuesday, Aug. 14, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers running back Ryan Mathews, who broke his collar bone in the opening preseason football game against the Green Bay Packers, stretches during practice at NFL football training camp, Tuesday, Aug. 14, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers quarterback Philip Rivers throws a pass during practice at NFL football training camp, Tuesday, Aug. 14, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers defensive back Antoine Cason, left, and wide receiver Vincent Brown battle for a pass during practice at NFL football training camp, Tuesday, Aug. 14, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers running back Ryan Mathews, who broke his collar bone in the opening preseason football game against the Green Bay Packers, watches practice at NFL football training camp, Tuesday, Aug. 14, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers defensive back Eric Weddle. left, works against wide receiver Mike Willie for the ball during practice at NFL football training camp Tuesday, Aug. 14, 2012, in San Diego. (AP Photo/Lenny Ignelzi)

FILE - In this July 23, 2012, file photo, San Diego Chargers general manager A.J. Smith appears during NFL football practice at the team's training camp in San Diego. The Chargers fired Smith and head coach Norv Turner on Monday, Dec. 31, after missing the playoffs for the third straight season. (AP Photo/Lenny Ignelzi, File)