Well, maybe I'm the only one, and I won't say this is/was a mistake but finishing in the normal course of events with high school is not such a bad thing and then going on to college, don't see how that would have hurt him.
He is several years younger than his college peers not just in terms of baseball, but also in academics and in social circumstances.
He has put all his proverbial eggs in this one basket and I really don't see the point of how much was gained.
Also, perhaps, USC wasn't the best choice. I'm an SC alum and a big fan of the program. They are in a big transition period, haven't been to the tournament in a while, people are already screaming for the coach to be fired and they are about a .500 team which is not well received by the Trojan faithful. With all this, perhaps a bit too much has been expected of Stock, putting aside the issues of his age.
College and those years and the maturing process are tough enough. Never have really understood this one at all.