Dallas Cowboys owner Jerry Jones, accompanied by his wife, Gene, talks with San Diego Chargers coach Norv Turner prior to the start of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers coach Norv Turner prior to the start of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

Dallas Cowboys quarterback Tony Romo looks for a receiver during the first quarter of a NFL preseason football game against the San Diego Chargers Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

Dallas Cowboys running back DeMarco Murray breaks through the defense of the San Diego Chargers after catching a short pass during the first quarter of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. The tackle is made by linebacker Donald Butler. (AP Photo/Lenny Ignelzi)

Dallas Cowboys quarterback Tony Romo throws a pass over San Diego Chargers defensive back Atari Bigby to running back DeMarco Murray in the flat during the first quarter of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Lenny Ignelzi)

Dallas Cowboys linebacker Victor Butler celebrates after sacking San Diego Chargers quarterback Philip Rivers during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

San Diego Chargers quarterback Philip Rivers is sacked by Dallas Cowboys linebacker Victor Butler during the first quarter of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

Dallas Cowboys wide receiver Cole Beasley is stripped of the ball by San Diego Chargers linebacker Donald Butler while trying to make a catch during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. Beasley ended up trapping the ball between his knees for a reception. (AP Photo/Chris Park)

Dallas Cowboys coach Jason Garrett joins his staff with an inquiry to side judge Mike Riley during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

Dallas Cowboys running back Felix Jones tries to keep his balance as he slides through the San Diego Chargers defense during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

San Diego Chargers coach Norv Turner argues with line judge Estaban Garza during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

Dallas Cowboys running back Jamize Olawale races away from San Diego Chargers linebacker Takeo Spikes during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers defensive back Atari Bigby breaks up a pass in the endzone intended for Dallas Cowboys wide receiver Kevin Ogletree during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers defensive back Quentin Jammer is attended to after being injured during a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

San Diego Chargers wide receiver Vincent Brown pulls in a touchdown pass as Dallas Cowboys defensive backs Mana Silva and Akwasi Owusu-Ansah arrive late during the second half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

Dallas Cowboys quarterback Tony Romo pleads his case with officials during the first half of a NFL preseason football game against the San Diego Chargers Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

Dallas Cowboys defensive back Brandon Carr picks off a pass in frint of San Diego Chargers wide receiver Robert Meachem during the first half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)

San Diego Chargers wide receiver Vincent Brown is dragged down in the end zone by Dallas Cowboys defensive back Akwasi Owusu-Ansah as Mana Silva sails over during the second half of a NFL preseason football game Saturday, Aug. 18, 2012 in San Diego. Brown was injured on the tackle and had to be carted off the field. (AP Photo/Chris Park)

Dallas Cowboys quarterback Tony Romo cools down during the first half of a NFL preseason football game against the San Diego Chargers Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Chris Park)

San Diego Chargers quarterback Philip Rivers warms up before a NFL preseason football game against the Dallas Cowboys, Saturday, Aug. 18, 2012 in San Diego. (AP Photo/Denis Poroy)