Tarvaris Jackson was 5-of-7 passing for 88 yards and one interception in two series, and Charlie Whitehurst went 9-of-15 for 140 yards for the Seahawks, who open the regular season Sept. 11 in San Francisco.
Golden Tate picked up 79 yards on five catches for Seattle.
Jason Campbell was 8-of-11 passing for 76 for the Raiders, who open the regular season Sept. 12 at Denver.
Sebastian Janikowski kicked a second-quarter field goal for Oakland.
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