Possibly if his arm is drained he relies on the curve much more. Or any hook. Seems useless arm would clearly show up nor prominently on speedy ball velocity, not anything hooking. Sixty-7 men and women died in the final two weeks of November from an as nevertheless unidentified illness https://www.dailypioneer.com/2019/sports/ellyse-perry-become-first-cricketer-to-reach-1000-runs--100-wickets-in-t20is.html