I say this every year because it's true every year.
There is always -- ALWAYS -- at least one QB who was OK in December, or maybe even a prospect in December, but then shoots up the draft charts because the experts get impressed. Last year it was Ryan Tannehill. The year before that, Blaine Gabbert and Jake Locker. I'm always amazed at the guys who get better every day without playing a game than they were playing every week.
Maybe some guys actually are worth it (Tannehill showed better than anyone expected, but let's not get carried away for one season); others make you wonder what everyone was so excited about. That's where I am on Glennon: he could be this year's Combine champion who never does anything else.