How much should Minnesota Vikings play their starters in the preseason opener against the Raiders; Ed Ingram pushing Chris Reed for starting right guard battle; Will Garrett Bradbury keep his job; Kellen Mond and Sean Mannion sharing the QB. 2 role; Which players have most to prove in the preseason; Thor defends his KJ Osborn take; Kevin O’Connell on not letting Packers fans in; Favorite Metrodome memories; Will US Bank Stadium be PACKED;