Velo is king, plain and simple. Some coach thinks "You can teach control, but you can't teach velo"...and poof, you are in!
Stayfocused: I'm holding less and less stock in PG data....I really do like PG and think the tourneys they put on are amazing, but you will always have 1-3 teams in your pool that aren't your teams caliber. My son has an impressive ERA and WHIP from this summer too, from over 22 innings pitched, but I saw who he pitched against...it became less impressive. I hope your son pitched against better competition than mine.