It takes at least three or four seasons to properly evaluate an NFL draft class. So this fall, it's make-or-break time for prospects from the 2016 and 2017 NFL drafts who underwhelmed over their first few seasons.
It's too late for a few highly touted prospects, many of whom have already moved on from their original teams. There's no reason to rehash the failures of Eli Apple, Corey Coleman, Darron Lee or Paxton Lynch.
For potential first-round draft busts still with their original squad, they'll have to overcome poor play, injuries or extenuating circumstances (like scheme or coaching changes).