Method of training and evaluating a hitter using a weighted ball

A method of training and evaluating a hitter comprising:

• using a weighted ball where said ball comprises:
• a resilient, flexible, nonburstable outer shell;
• an inner chamber;
• a filler hole;
• a weighted filler material inserted into said inner chamber through said filler hole;
• air inside said inner chamber that displaces the remaining space inside said inner chamber such that an inside air pressure equals an outside air pressure;
• a hole plug to seal said filler hole after filling said inner chamber with said weighted filler material;
• a hole plug sealant to fill vacant hole plug space, to reinforce and strengthen said hole plug, and to permanently fill and seal said filler hole and said hole plug to prevent escape of said filler material and said air from said ball;
• and
• whereby said hole plug sealant forms a portion of said outer cover of said ball;
• said hitter hitting said weighted ball with a bat;
• said weighted ball wrapping around said bat and said weighted ball absorbing energy from said hitter;
• said weighted ball traveling a limited distance from said hitter;
• said weighted ball providing instant optical feedback to said hitter by travel position and ball deformation whereby hitter can actually see said ball deformation;
• said weighted ball travels by leaving said bat in a substantially horizontal plane position when hit correctly and in a generally round formation;
• said weighted ball travels by donuting substantially vertical to ground position in an out of round deformation when hit incorrectly;
• lifting up position if hit too low or diving downward position when hit too high or;
• donuting in a horizontal position in an out of round deformation when hit in an inside out manner with said bat.