Out of nowhere as in his velocity spiked this year compared to last year which has at least in part made him a top 5 pick.After HS he was picked 10th round in '11 out of juco and every report I read is that if he was elgible in '12 there is no way he was on the first round radar. He went from being a first two day pick to a top 5 pick from '12 to '13. That is different than Appel who has been talked about as a future top overall pick since early in his career at Stanford.
I blame adderall