What if they always throw side arm? I have one that throws okay but it's always side arm. I've heard its bad for shoulder and I've seen it cause bad throws so I usually coach them to throw over hand.
I didn't know that players should throw side arm ever. This is news to me (really). Btw she is not second base material.
Sorry to hijack the post but thought it fit in with the topic.
What I have found is that when you have a SS or 3B that throws sidearm they can usually pull it off throwing to first. That is because some of their forward momentum is toward the target. Now give them a slow roller and have them throw to 2nd base to initiate the double play. That is usually pretty ugly and a disaster. I have seen very few players throw exclusively sidearm with any consistency. To me it is a skill best reserved for when there is no other option.