(Las Vegas, NV)  --  The Seahawks backups got some play in a 20-7 preseason loss to the Raiders in Las Vegas on Saturday.  DeeJay Dallas took a short pass from Alex McGough 43 yards to the house for Seattle's only score.  Cody Barton contributed on defense with nine tackles and two sacks and Ryan Neal had an interception.  The Seahawks host the Broncos this Saturday in preseason action.