San Francisco 49ers cornerback Allen Rossum (20) carries the ball as Oakland Raiders linebacker Jon Alston (55) moves in, in the first quarter during tan NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Paul Sakuma)

Oakland Raiders quarterback JaMarcus Russell (2) throws the ball in the first quarter during an NFL preseason football game against the San Francisco 49ers in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Paul Sakuma)

San Francisco 49ers quarterback Alex Smith (11) looks to pass in the first quarter during an NFL preseason football game against the Oakland Raiders in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Marcio Sanchez)

San Francisco 49ers quarterback Alex Smith (11) holds off Oakland Raiders defensive end Tommy Kelly (93) in the first quarter during an NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders wide receiver Louis Murphy (18) celebrates his touchdown with teammate Cornell Green (74) in the second quarter during NFL preseason football game against the San Francisco 49ers in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders tight end Zach Miller (80) is tackled by San Francisco 49ers safety Dashon Goldson (38) during the second quarter of an NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Paul Sakuma)

Oakland Raiders quarterback Charlie Frye (3) dives into the end zone for a touchdown in the fourth quarter during NFL preseason football game against the San Francisco 49ers in San Francisco, Calif., Saturday, Aug. 22, 2009. The 49ers beat the Raiders 21-20. (AP Photo/Marcio Sanchez)

Oakland Raiders tight end Brandon Myers (83) makes a touchdown catch from a pass thrown by Bruce Gradkowski (5), left, in the third quarter during NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Paul Sakuma)

Oakland Raiders head coach Tom Cable, left, shakes hands with San Francisco 49ers head coach Mike Singletary at the end of a preseason NFL football game in San Francisco, Saturday, Aug. 22, 2009. San Francisco won 21-20. (AP Photo/Marcio Jose Sanchez)

Oakland Raiders quarterback Charlie Frye (3) gets his shirt pulled by San Francisco 49ers Khalif Mitchell (60) in the fourth quarter during NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. The 49ers beat the Raiders 21-20. (AP Photo/Marcio Sanchez)

Oakland Raiders wide receiver Nick Miller (89) fumbles the ball on a punt return in the fourth quarter as San Francisco 49ers Scott McKillop (56), Marques Harris (54), and Justin Roland (50) take him down during NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. (AP Photo/Marcio Sanchez)

Oakland Raiders tight end Brandon Myers (83) makes a 30-yard catch in the fourth quarter as San Francisco 49ers linebacker Scott McKillop (56) attempts to break up the pass during NFL preseason football game in San Francisco, Calif., Saturday, Aug. 22, 2009. The 49ers beat the Raiders 21-20. (AP Photo/Marcio Sanchez)