I probably could post this in the injuries section, but whatever, I’ll give it a shot. Naturally I have a very stiff lower back and this causes me to follow through very high when I pitch. I have to make a conscious effort to try to “bend over” and even this is very hard. It’s not that my back gets tight, it just naturally is stiff in the lower part. Sometimes, my lower back is sore in the middle of pitching and is usually a little sore after the game.
What can I do to fix this? Also, what does the back do in the kinetic chain of the pitching mechanics?