It's almost customary in the NFL for teams to sparingly, if at all, play their starters at the beginning of the preseason. If they do get on the field, it's usually only for a drive or two. Seattle Seahawks head coach Mike Macdonald has already said he won't be playing the starters in Thursday's preseason opener against the Las Vegas Raiders — now led by former Seahawks head coach Pete Carroll and starting quarterback Geno Smith.