Photo Gallery: Seahawks vs Vikings

Seattle Seahawks quarterback Tarvaris Jackson, right, escapes pressure from Minnesota Vikings' Jared Allen in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. The Vikings beat the Seahawks, 20-7. (AP Photo/Ted S. Warren)

Seattle Seahawks quarterback Charlie Whitehurst sets to pass against the Minnesota Vikings in the second half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Seattle Seahawks quarterback Josh Portis looks to throw in the second half of a preseason NFL football game against the Minnesota Vikings, Saturday, Aug. 20, 2011, in Seattle. The Vikings beat the Seahawks, 20-7. (AP Photo/Ted S. Warren)

Seattle Seahawks quarterback Tarvaris Jackson gets up after being tackled in the first half of a preseason NFL football game against the Minnesota Vikings, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Seattle Seahawks' Sidney Rice (18) reacts as Minnesota Vikings' Everson Griffen looks on at right, after the Vikings stopped the Seahawks short of the goal line in a play in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Minnesota Vikings quarterback Donovan McNabb, righ and Seattle Seahawks quarterback Tarvaris Jackson talk on the field after a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. Vikings won 20-7. (AP Photo/John Froschauer)

Seattle Seahawks quarterback Tarvaris Jackson looks to pass against the Minnesota Vikings in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Minnesota Vikings head coach Leslie Frazier, left and Seattle Seahawks head coach Pete Carroll shake hands after a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. Vikings won 20-7. (AP Photo/John Froschauer)

A fired up Seattle Seahawks head coach Pete Carroll in the second half of a preseason NFL football game against the Minnesota Vikings, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Minnesota Vikings quarterback Donovan McNabb looks to pass as Seattle Seahawks' Raheem Brock, left, is blocked by Vikings' Adrian Peterson, in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/Ted S. Warren)

Seattle Seahawks quarterback Christian Ponder under pressure from Minnesota Vikings Jared Allen in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/John Froschauer)

Seattle Seahawks Marshawn Lynch (24) goes airborne to avoid a tackle attempt by Minnesota Vikings' Brandon Burton (36) in the first half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/John Froschauer)

Seattle Seahawks Anthony McCoy dunks the football over the goal post after scoring a touchdown against the Minnesota Vikings in the second half of a preseason NFL football game, Saturday, Aug. 20, 2011, in Seattle. (AP Photo/John Froschauer)