To make things even more difficult, the underhand delivery meant the ball was rising as it approached the plate and a talented pitcher could make the ball perform some baffling aerobatics on its journey to the batter's box.
The tricky aspect of the underhand delivery made the ball curve upward as it drew near the plate, presenting a unique challenge for pitchers who needed to master the art of manipulating the ball's trajectory during its approach to the batter's box.