Midlo Son.
And no, I am not joking.
Knowing a little bit about your son - I think that's very probably a fair assessment. 
infielddad said something nice about one of our sons up above - I'm not really sure I agree with him. That son was a 'scary' HS pitcher in that he threw very hard and struck out a lot of kids, but I wouldn't put him in the category of 'best' HS pitcher I ever saw. His younger brother was a better HS pitcher than him - lower ceiling (less size and velo), but more refined and better coached in HS and won an awful lot of games.
Anyways, I do agree with infielddad about that Kyle Blair/Kevin Eichorn game, both pro prospects, that went into extra innings tied at 0-0. That game wasn't won until one of them was lifted after 7 (Blair) which was the right thing to do. If I remember right, Eichorn won it himself at the plate with a walkoff double.
I'll give you one that I think you'll see in the big leagues late this year - September callup I believe - Robert Stephenson (Reds). He played with our younger son in travel ball, was the Reds 1st round pick in 2011. Big frame, loose, mid 90s with 3 pitches and that was in HS. He's progressed well in the minor leagues and is in big league camp this year. If he stays healthy, he's gonna be a special pitcher for a long time. Also one of the nicest kids and family I've met along the way. Very easy to root for this young man.