Perhaps if his arm is weary he is dependent upon the curve a lot more. Or any hook. Seems useless arm would display up nor prominently on fast ball velocity, not just about anything hooking. Experts Talking to DailyMail.com stated the symptoms ended up 'non-particular' plus they wanted more info. https://www.dailypioneer.com/2019/vivacity/be-the-protector.html?fromNewsdog=1&utm_source=NewsDog&utm_medium=referral