This is a new one for me. I have a 14U pitcher with good mechanics, she throws 51-54 with her fastball. She has started to hit her hip with her upper forearm to the point where I am becoming concerned. Right now it's barely tolerable, her arm gets very red and she says there is a little discomfort. Her hips don't look like they have closed up too much and her elbow has a reasonable amount of flex to it so I'm thinking that she is IR-ing early and this causes the contact. She can get around it by forcing her hips to stay open but it throws her motion out of whack.