It's just about time for the Dallas Cowboys to perform their dress rehearsal. On Saturday night, the Cowboys will host the Minnesota Vikings in a preseason game at AT&T Stadium. The third preseason game is the traditional one where teams finally put all their healthy starters on the field to get a little bit of game action. Just how far will Jason Garrett go with that idea? It's hard to say, Garrett is notoriously tight-lipped about that stuff, keeping all of his options open until the final minute. Will he put all of his offensive line (except Zack Martin) out there for an extended look?