Oakland Raiders running back Louis Rankin (40) celebrates after scoring a touchdown in the third quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders running back Darren McFadden (20) in action against the Dallas Cowboys during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders quarterback Charlie Frye (3) gets pressured by Dallas Cowboys linebacker Jason Williams (58) in the fourth quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders running back Darren McFadden (20) shakes off Dallas Cowboys safety Courtney Brown (27) after a 45-yard run in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Dallas Cowboys wide receiver Isaiah Stanback (86) misses a touchdown pass in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Dallas Cowboys safety Pat Watkins (25) tackles Oakland Raiders cornerback Justin Miller (22) in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders defensive end Jay Richardson (98) sacks Dallas Cowboys quarterback Jon Kitna (3) in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

The Oakland Coliseum is seen in the second half of the Oakland Raiders vs' Dallas Cowboys preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Oakland Raiders tight end Brandon Myers (83) gets tackled by Dallas Cowboys linebacker Justin Rogers (50) and Dallas Cowboys safety Mike Hamlin (36), right, in the fourth quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders linebacker Thomas Howard (53) attempts to break up a run by Dallas Cowboys running back Felix Jones (28) in the first quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Dallas Cowboys fans are seen before the game against the Oakland Raiders during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders fans cheer before their their preseason NFL football game against the Dallas Cowboys in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders cheerleaders are seen before the game against the Dallas Cowboys during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

The Oakland Raiders cheerleaders entertain before the game against the Dallas Cowboys during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Oakland Raiders running back Louis Rankin (40) scores a touchdown in the third quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Dallas Cowboys quarterback Tony Romo (9) drops back to pass as Oakland Raiders defensive tackle Gerard Warren (61) pursues in the first quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Dallas Cowboys wide receiver Sam Hurd (17) is tackled by Oakland Raiders safety Michael Huff (24) in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Dallas Cowboys wide receiver Patrick Crayton (84) shakes off Oakland Raiders cornerback Hiram Eugene (31) in the first quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders quarterback JaMarcus Russell (2) scrambles in the first quarter against Dallas Cowboys defensive end Igor Olshansky (99) and Dallas Cowboys linebacker Anthony Spencer (93) during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Oakland Raiders quarterback JaMarcus Russell (2) passes to Oakland Raiders running back Justin Fargas (25) in the first quarter against Dallas Cowboys during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Dallas Cowboys quarterback Jon Kitna (3), center, is sacked by Oakland Raiders linebacker Ricky Brown (57) and Oakland Raiders defensive end Jay Richardson (98) in the third quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Jeff Chiu)

Oakland Raiders running back Darren McFadden (20) shakes off Dallas Cowboys safety Courtney Brown (27) after a 45-yard run in the second quarter during their preseason NFL football game in Oakland, Calif., Thursday, Aug. 13, 2009. (AP Photo/Marcio Sanchez)