Both of my sons are qb's. They both increased their velocity between their jr and sr years by throwing the football so much during the late summer 7 on 7 and in the fall every day during practice. I am a firm believer in the football. Plus, during football season we also have our kids lift three days a week plus lots of leg conditioning. I'm sure that also plays a huge part. I get nervous every friday night about injuries but I also have seen how much tougher my kids became after every game. Physically and mentally. We put the baseball down in early august and don't pick it up again until the football play-offs are over. My oldest is a left handed college pitcher/of. My youngest is a sr c/pitcher.