Abstract: The invention is for a method of training and evaluating a hitter using a weighted ball where the hitter hits the weighted ball with a bat and where the weighted ball wraps around the bat and thereby the ball absorbs some of the energy from the batter and whereafter striking the weighted ball the ball leaves the bat in a substantially horizontal plane if it is hit correctly and where the weighted ball donuts substantially vertical to the ground if hit incorrectly or lifts up if hit too low or dives downward if hit to high or donuts horizontally if hit in an inside out manner with the bat.

Abstract: The invention is for a weighted ball designed to be hit or struck where the ball has a resilient, flexible, nonburstable outer shell, a hollow inner chamber and a filler hole where a weighted filler material is inserted into the hollow inner chamber through the filler hole and where the air inside the hollow inner chamber that displaces the remaining space inside the hollow inner chamber and where the inside air pressure is equal to the outside air pressure, and where a hole plug seals the filler hole after filling the hollow inner chamber with the weighted filler material, and where a hole plug sealant is used to fill the vacant hole plug space and to reinforce and strengthen the hole plug.

Abstract: A ball that is pliable, seamless, flexible and durable that has a seamless, uniformly thick outer shell and where the shell has one or more holes formed in the outer shell and where the walls of the holes are angled inwardly toward the center of the ball in order to increase air flow into the ball.

Abstract: The invention is for a method of training and evaluating a hitter using a weighted ball where the hitter hits the weighted ball with a bat and where the weighted ball wraps around the bat and thereby the ball absorbs some of the energy from the batter and whereafter striking the weighted ball the ball leaves the bat in a substantially horizontal plane if it is hit correctly and where the weighted ball donuts substantially vertical to the ground if hit incorrectly or lifts up if hit too low or dives downward if hit to high or donuts horizontally if hit in an inside out manner with the bat.

Abstract: A ball that is pliable, seamless, flexible and durable that has a seamless, uniformly thick outer shell and where the shell has one or more holes through the outer shell such that the ball is soft and because of the design it does not fly very far.

Abstract: The invention is for a weighted ball designed to be hit or struck where the ball has a resilient, flexible, nonburstable outer shell, a hollow inner chamber and a filler hole where a weighted filler material is inserted into the hollow inner chamber through the filler hole and where the air inside the hollow inner chamber that displaces the remaining space inside the hollow inner chamber and where the inside air pressure is equal to the outside air pressure, and where a hole plug seals the filler hole after filling the hollow inner chamber with the weighted filler material, and where a hole plug sealant is used to fill the vacant hole plug space and to reinforce and strengthen the hole plug.