Jason Campbell leaves game

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Raiders quarterback Jason Campbell left Saturday night’s game with an undisclosed injury.

Campbell was seen flexing his hand, then left the game. He stood on the sidelines without being attended to by medical staff, which would seem to indicate the injury isn’t too serious.  Still, Trent Edwards entered the game and stayed in until halftime hit.

Oakland trails San Francisco 3-0 at the half. Both teams actually moved the ball fairly well, especially the 49ers who racked up 226 yard to 135 for Oakland. But one 49ers drive stalled on the two yard-line and Alex Smith threw an interception to kill another drive.

Smith completed 8-0f-13 passes for 126 yards and the interception.   Campbell was 5-of-7 for 74 yards before leaving.