San Diego Chargers running back Ryan Mathews, center, celebrates with teammates Kris Dielman, left, and Marcus McNeill after scoring a touchdown against the Kansas City Chiefs in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers wide receiver Patrick Crayton bobbles but later gets a handle on a catch as Kansas City Chiefs cornerback Brandon Flowers, left, and Donald Washington, right, defend in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs cornerback Brandon Flowers, left, grabs an interception off a pass thrown by San Diego Chargers quarterback Philip Rivers as Chargers wide reciever Malcom Floyd can't reach him in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs free safety Kendrick Lewis, right, intercepts a pass from San Diego Chargers quarterback Philip Rivers (not pictured) as San Diego Chargers wide receiver Vincent Jackson, left, looks on with Kansas City Chiefs defensive back Javier Arenas in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers wide receiver Vincent Jackson makes a catch as Kansas City Chiefs cornerback Brandon Flowers hauls him down in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers running back Ryan Mathews scores a touchdown against the Kansas City Chiefs in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers cornerback Antoine Cason, center, and teammate Travis LaBoy, left, react as a kick by Kansas City Chiefs kicker Ryan Succop misses in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. Kansas City Chiefs tight end Anthony Becht looks on at right. (AP Photo/Denis Poroy)

San Diego Chargers running back Ryan Mathews moves upfield as Kansas City Chiefs outside linebacker Justin Houston can't reach him in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers running back Ryan Mathews gets past Kansas City Chiefs defensive back Travis Daniels en route to scoring his second touchdown in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

Kansas City Chiefs wide receiver Dwayne Bowe grabs a catch in the end zone for a touchdown as San Diego Chargers cornerback Antoine Cason defends in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

Kansas City Chiefs quarterback Matt Cassel throws a pass under pressure by San Diego Chargers defensive tackle Cam Thomas in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers quarterback Philip Rivers throws a pass while playing the Kansas City Chiefs in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers quarterback Philip Rivers is hit from both sides after throwng a pass by Kansas City Chiefs defensive end Wallace Gilberry, front, and outside linebacker Tamba Hali in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers tight end Randy McMichael runs upfield against the Kansas City Chiefs in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

Kansas City Chiefs quarterback Matt Cassel hands off to Thomas Jones in the first half of an NFL football game against the San Diego Chargers Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Gregory Bull)

San Diego Chargers quarterback Philip Rivers looks to throw a pass against the Kansas City Chiefs in the first half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers free safety Eric Weddle reacts after grabbing an interception against the Kansas City Chiefs in the fourth quarter of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers free safety Eric Weddle reacts after grabbing an interception against the Kansas City Chiefs in the fourth quarter of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers outside linebacker Shaun Phillips celebrates his sack on Kansas City Chiefs quarterback Matt Cassel (not pictured) as teammate inside linebacker Takeo Spikes, right, looks on in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs wide receiver Dexter McCluster leaps past San Diego Chargers outside linebacker Shaun Phillips, second from right, and inside linebacker Donald Butler, right, in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs quarterback Matt Cassel is sacked by San Diego Chargers defensive end Vaughn Martin (92) , and outside linebacker Shaun Phillips (95) in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs wide receiver Dwayne Bowe grabs a catch in the end zone for a touchdown as San Diego Chargers cornerback Antoine Cason defends in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers running back Ryan Mathews (24) is greeted by teammate wide receiver Vincent Jackson, above, after Mathews scored a touchdown against the Kansas City Chiefs in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers free safety Eric Weddle (32) reacts after grabbing an interception against the Kansas City Chiefs with teammate San Diego Chargers tackle Marcus McNeill (73) in the fourth quarter of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers free safety Eric Weddle (32) celebrates as he walks off the field after an NFL football game against the Kansas City Chiefs Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers free safety Eric Weddle (32) celebrates as he walks off the field after an NFL football game against the Kansas City Chiefs Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers defensive players chant before going onto the field before an NFL football game against the Kansas City Chiefs Sunday, Sept. 25, 2011 in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers running back Mike Tolbert runs up the middle against the Kansas City Chiefs in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

Kansas City Chiefs tight end Leonard Pope runs upfield as San Diego Chargers outside linebacker Travis LaBoy tries to throw him out of bounds in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Lenny Ignelzi)

San Diego Chargers running back Ryan Mathews passes Kansas City Chiefs defensive back Travis Daniels en route to scoring his second touchdown against the Kansas City Chiefs in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers running back Ryan Mathews gets past Kansas City Chiefs defensive back Travis Daniels as he scores a touchdown in the second half of an NFL football game Sunday, Sept. 25, 2011, in San Diego. The Chargers won 20-17. (AP Photo/Denis Poroy)