Here is a article where Dr. Glenn Fleisig, research chairman at the American Sports Medicine Institute in Birmingham, Ala., explains the key components to achieving optimal speed on a fastball.
A flamethrowers checklist
I like this from the article
"Moderation: "Our experience is that the pitchers who achieve the highest levels are not the ones who didn't play baseball when they were a kid and are not the ones that were playing on two teams at a time. Those kids get hurt or physically burn out. The ones who survive are the ones who played enough but the parents didn't go crazy and put them on all these teams at once and there were no coaches going crazy and having them pitch every day."
Here is one more link:
Joshua Fields UGA
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