Myself being a former Major League Pitcher from 1990-2003, proper training from proper teachers will show him the basic fundamentals that will keep him injury free. It is usually overzealous pitching coaches that injure an arm. Since retiring, I have instructed many up and coming pitchers like your son, some of which are on the collegiate olympic team as well as many college teams around the country (speaking of, one is in the college world series.) That being said, if you are looking for the right and appropriate pitching instruction to teach proper mechanics, I offer those services. I cover clients from SF to SD. If you would like me to answer any further questions for you or your husband, I would look foward to discussing further.
Please email me at vivarrod44@hotmail.com.
Rich Rodriguez