Possibly if his arm is exhausted he is dependent upon the curve way more. Or any hook. Looks useless arm would exhibit up nor prominently on fast ball velocity, not just about anything hooking. Libby pitched 86 innings very last 12 months primarily an inning or two at a time. https://www.dailypioneer.com/2014/columnists/its-the-influential-that-get-good-governance.html