Maybe If his arm is exhausted he will depend on the curve way more. Or any hook. Appears to be useless arm would clearly show up nor prominently on speedy ball velocity, not just about anything hooking. Russia launched its offensive in the spring aiming to create a "buffer zone" https://www.dailypioneer.com/2014/state-editions/600-year-old-islamic-calligraphy-on-display.html