It’s not exactly true that rookies were put on this earth to disappoint fantasy owners, regardless of sport, though it often seems the case. Rookies come in many shapes and sizes and rounds of the real draft, but one thing is for sure: the preseason games can tell us only so much, and much of the time what it tells us is misleading. So it is on this final Monday of August, with the NFL season less than a fortnight away, that the No. 8 quarterback chosen in the 2016 NFL draft is arguably the most-talked-about player at water coolers, as his opportunity to lead the Dallas Cowboys in Week 1 is here.