Maybe if his arm is exhausted he is dependent upon the curve a great deal more. Or any hook. Appears to be lifeless arm would show up nor prominently on rapid ball velocity, not anything hooking. Libby pitched 86 innings previous year mainly an inning or two at any given https://www.dailypioneer.com/uploads/2018/epaper/december/ranchi-english-edition-2018-12-26.pdf