In my summer league (which uses AL rules. I pitch relief and I DH), I'm batting .340 0HR, 31 RBIs. I also have a 1-3 W-L and a 2.30 ERA. I can't exactly say that pitching that much is hurting me. The truth is I need practice. Half of the pitches are short tosses and about 60% are off speed. I always ice my elbow, and take care of it. I rarely have strain in it. The question was more, how much does this count as exercise? I know I am being active. I know weight lifting is more than this. By a long shot. But this is so much fun for me.