Patrick Peterson (21) celebrates his interception return for a touchdown against the San Diego Chargers during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

Arizona Cardinals' Kevin Kolb (4) looks to throw under pressure from San Diego Chargers' Antwan Barnes, right, during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

San Diego Chargers' Philip Rivers warms up prior to an NFL football preseason game against the Arizona Cardinals on Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' Kevin Kolb (4) warms up prior to an NFL preseason football game against the San Diego Chargers on Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Matt York)

San Diego Chargers' Ryan Mathews (24) has the ball stripped away by Arizona Cardinals' Calais Campbell (93) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers recovered the ball. (AP Photo/Paul Connors)

San Diego Chargers' Philip Rivers walks to the sidelines after throwing an interception during the first half of an NFL preseason football game against the Arizona Cardinals on Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

Arizona Cardinals' Kevin Kolb throws under pressure from San Diego Chargers' Bob Sanders (31) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' LaRod Stephens-Howling (36) is tackled by San Diego Chargers' Darrell Stuckey (25) and Richard Goodman during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' Larry Fitzgerald (11) breaks the tackle of San Diego Chargesr' Quentin Jammer (23) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

San Diego Chargers' Malcom Floyd (80) celebrates his touchdown with Vincent Jackson during the first half of an NFL preseason football game against the Arizona Cardinals on Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' Andre Roberts (12) scores a touchdown in front of San Diego Chargers' Bob Sanders during the second quarter of a preseason NFL football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

Arizona Cardinals coach Ken Whisenhunt, left, and San Diego Chargers coach Norv Turner talk prior to an NFL football preseason game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

San Diego Chargers' Antonio Gates, left, beats Arizona Cardinals' Kerry Rhodes (25) for a touchdown during the second quarter of a preseason NFL football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

Arizona Cardinals' Beanie Wells (26) breaks free of the reach of San Diego Chargers' Eric Weddle (32) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

San Diego Chargers' Ryan Mathews (24) eludes the grasp of Arizona Cardinals' Dan Williams (92) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' Kevin Kolb (4) escapes the grasp of San Diego Chargers' Dante Hughes (33) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

Arizona Cardinals' Early Doucet (85) is tackled by San Diego Chargers' Steve Gregory (28) and Eric Weddle (32) during the first half of an NFL preseason football game Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Paul Connors)

San Diego Chargers' Philip Rivers (17) walks back to the huddle after talking with coach Norv Turner during the second quarter of a preseason NFL football game against the Arizona Cardinals, Saturday, Aug. 27, 2011, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

San Diego Chargers' Billy Volek (7) gets wrapped up by Arizona Cardinals' Jeremy Navarre, but manages to throw an incomplete pass on the play, during the fourth quarter of a preseason NFL football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers defeated the Cardinals 34-31. (AP Photo/Ross D. Franklin)

San Diego Chargers' Philip Rivers and Arizona Cardinals' Larry Fitzgerald, left, greet each other after an NFL preseason football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers won 34-31. (AP Photo/Paul Connors)

San Diego Chargers head coach Norv Turner, left, and Arizona Cardinals head coach Ken Whisenhunt greet each other after an NFL preseason football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers won 34-31. (AP Photo/Paul Connors)

Arizona Cardinals' WIlliam Powell (37) is tackled by San Diego Chargers' Darrell Stuckey (25), Steve Gregory, right, and Darryl Gamble during the second half of an NFL preseason football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers won 34-31. (AP Photo/Paul Connors)

Arizona Cardinals head coach Ken Whisenhunt, right, argues a call with a referee during the second half of an NFL preseason football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers won 34-31. (AP Photo/Paul Connors)

Arizona Cardinals' LaRod Stephens-Howling, right, makes a diving touchdown catch in front of San Diego Chargers' Darrell Stuckey (25) during the fourth quarter of a preseason NFL football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers defeated the Cardinals 34-31. (AP Photo/Ross D. Franklin)

San Diego Chargers' Bryan Walters (13) scores the winning touchdown against the Arizona Cardinals' Marshay Green (30) during the fourth quarter of a preseason NFL football game, Saturday, Aug. 27, 2011, in Glendale, Ariz. The Chargers defeated the Cardinals 34-31. (AP Photo/Ross D. Franklin)