San Francisco 49ers quarterback Alex Smith throws during the first half of a preseason NFL football game against the Oakland Raiders in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders quarterback Jason Campbell (8) throws under pressure from San Francisco 49ers defensive tackle Justin Smith, left, during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers linebacker Patrick Willis (52) brings down Oakland Raiders running back Michael Bush (29) during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders running back Michael Bush (29) celebrates after a rushing touchdown during the first half of a preseason NFL football game against the San Francisco 49ers in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders running back Michael Bush, right, celebrates after a rushing touchdown during the first half of a preseason NFL football game against the San Francisco 49ers in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers running back Frank Gore, right, runs past Oakland Raiders cornerback Stanford Routt during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

Oakland Raiders quarterback Jason Campbell throws against the San Francisco 49ers during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers linebacker Patrick Willis, right, brings down Oakland Raiders running back Darren McFadden during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

San Francisco 49ers running back Frank Gore, top, leaps over Oakland Raiders safety Michael Huff during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

San Francisco 49ers running back Frank Gore, top, leaps over Oakland Raiders safety Michael Huff during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders running back Darren McFadden (20) is tackled during the first half of a preseason NFL football game against the San Francisco 49ers in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders quarterback Jason Campbell, bottom, is brought down by San Francisco 49ers linebacker Travis LaBoy during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. Campbell left the game with an injury after the play. (AP Photo/Paul Sakuma)

Oakland Raiders' Jason Campbell is sacked by San Francisco 49ers linebacker Patrick Willis during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

Oakland Raiders quarterback Jason Campbell leaves the game with an injury during the first half of a preseason NFL football game against the San Francisco 49ers in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Ben Margot)

San Francisco 49ers' Phillip Adams returns a punt 83 yards for a touchdown during the first half of a preseason NFL football game against the Oakland Raiders in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

Oakland Raiders wide receiver Louis Murphy jumps into the stands after a 74-yard touchdown reception during the first half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)

Oakland Raiders running back Darren McFadden, right, runs past San Francisco 49ers linebacker Takeo Spikes during the second half of a preseason NFL football game in Oakland, Calif., Saturday, Aug. 28, 2010. (AP Photo/Paul Sakuma)