Probably if his arm is weary he depends on the curve considerably more. Or any hook. Seems dead arm would display up nor prominently on speedy ball velocity, not anything hooking. Libby pitched 86 innings last year mainly an inning or two at any given time. He’s a pair starts https://www.dailypioneer.com/2021/world/us-will-not-hesitate-to-raise-cost-on-russia--joe.html