Super Bowl champion Eric Davis and Rahshaun Haylock preview the Niners Week 17 visit to Las Vegas. E.D. discusses his Twitter disagreement with hall of fame writer Peter King about Brock Purdy. What precedence has this regime set about the QB position? Who has more trade value --Trey Lance or Purdy? What does Nick Bosa have to do to win the MVP? E.D.'s keys! Plus more!