I have now seen too many young pitchers develop arm trouble. Young pitchers continue to over through. It never fails that young pitchers want to throw as hard as they can. Make sure pitchers establish control first. I first want to start with defense.
Pitcher is a defensive position.
However, I constantly see blown plays where the pitcher fails in the execution of his defensive responsibilities. I think this is more the result of lack of attention on the part of coaching than it is on the part of the player. Practice covering first on balls hit between first and second and balls hit up the line at first. Practice covering home on past balls. Move behind the line at third with runners in scoring position.