My 12-year old son has some moderate pain in the upper/outer portion of his arm about two inches below the bersa ONLY during warm up with his team and warm up at first base. He says it does not hurt while pitching, in the dugout, or at home but only hurts when he actually throws in warm up.
He pitching form seems OK and he has played about 20 games so far and only pitched two innings in a day. He seems to be throwing across his body and lunging with his shoulder vs ‘staying back’ and activating via the legs and hips and letting his shoulder follow during warm up to incluce long toss.
He is still growing at 5’9.5" and 145#. He swam 3-4 days a week and we did long toss twice a week during off season.
Go to the link to see a photo on the mound.
Should I be worried? My plan is to go back to the pitching manual and see if he can be more disciplined in warm up and evaluate after he pitches four innings this week.