The most common way pitchers tip is with their gloves. Different pitches are held differently in the throwing hand. A fastball is gripped with the index and middle finger on top of the ball, whereas a changeup is gripped more with the palm. Thus, the hand holding a changeup often makes for a wider hand in the glove. As a hitter, I’d observe from sixty feet away the glove get bigger, or flare, by just an inch or so with this widened changeup grip.
