


With each win, Vikings quarterback Case Keenum looks more and more like the real deal. On Thursday, the guy operating under a one-year, $1 million deal outplayed the highest-paid player in league history.
And while coach Mike Zimmer allowed himself to praise Keenum more effusively than Zimmer has to date, Zimmer still hasn’t declared Keenum to be the unquestioned starter.
So why won’t he? The official PFT theory is that Zimmer, who…