I've posted this before, and I know I'm not the only one to have had this thought: there's a special place in Heaven for parents of pitchers.
I do have to say that my nerves have gotten better as each kid has entered school ball, but now the only pitcher is the youngest one, and I feel my nerves are coming back. The older two are outfielders and and I only worry when they're at bat. Defensively, I have no concerns, but that may be foolish!