The present application discloses an accessory for items of sporting equipment. Implementations may provide an accessory comprising a structure configured to be affixed to a first end of an item of sporting equipment meant to be swung or rotated, such as a baseball bat, lacrosse stick, or tennis racquet. The addition of the accessory results in movement of the center of mass of the sporting item. Implementations may be varied in weight and dimension such that the center of mass of the sporting item is moved to a location optimal for the demands of the sport and individual athletes' needs. Implementations may also provide for modifiable weight or dimension of the accessory.

The present application discloses an accessory for items of sporting equipment. Implementations may provide an accessory comprising a structure configured to be affixed to a first end of an item of sporting equipment meant to be swung or rotated, such as a baseball bat, lacrosse stick, or tennis racquet. The addition of the accessory results in movement of the center of mass of the sporting item. Implementations may be varied in weight and dimension such that the center of mass of the sporting item is moved to a location optimal for the demands of the sport and individual athletes' needs. Implementations may also provide for modifiable weight or dimension of the accessory.

The present invention relates to a pitching training aid for shadow pitching training, the pitching training aid comprising: a receiving body which includes an inner receiving space and has openings at both sides thereof, and replicates a baseball in a state where a user encompasses and holds the receiving body with his/her hand or wears the receiving body on his/her fingers through the receiving space; a locking holder which is detachably inserted and fixed in the receiving space through the opening of the receiving body, and provides a locking region where locking through-holes are formed in the longitudinal direction, so as to allow at least one finger to be fitted and locked into the locking holder in the longitudinal direction, the locking holes extending in a curved shape having a predetermined curvature; and an elongated body which has a rod shape extending a predetermined length from one side of the receiving body, and provides load and vibration while being elastically deformed and restored by rotation of a user's arm.

In an example embodiment, a golf club shaft is disclosed that comprises: a grip portion and a central shaft. The central shaft comprises a plurality of holes capable of being removably filled by one or more weighted plugs. In various example embodiments, the weighted plugs may be any weight desirable to the golfer, and may be positioned at any location on the shaft where there is a hole to customize the weighting of the golf club. In such embodiments, the weighted plugs may be made of a high density material and may weigh above about 14 grams.

Described herein is a system of golf clubs having shafts with ascending weights (shaft weights that increase as shaft lengths decrease). The system of golf clubs can be manufactured by implementing a method called stepping, which allows the system of golf clubs with ascending weights to be manufactured with reduced quantity of inventory.

Examples of a golf club with weight counter balance means are described. The golf club comprises a grip with a weight port and a weight load configured to be removably inserted and secured into the weight port and a club head that has a weight recess and a weight insert configured to be removably inserted and secured into the weight recess. The weight load in the grip and the weight insert in the club head are counterbalanced and predetermined to fit user's parameters such that a same club can be fitted for different user or same user after progressing his/her skills by changing the grip weight and the club head weight.

A golf grip having a weighted rear, longitudinal underside section providing a high Moment of Inertia to increase resistance to twisting and turning when the grip is connected to a golf club during the execution of a golf shot.

A golf grip having a weighted rear, longitudinal underside section providing a high Moment of Inertia to increase resistance to twisting and turning when the grip is connected to a golf club during the execution of a golf shot.

A shock and vibration absorbing system includes a shock and vibration dampener disposed within a handle or tapered section of a bat. The dampener includes at least one elastomeric dampening element for supporting a mass in suspension within the bat without the mass contacting an inner surface of the bat. The dampening elements include a body having the mass extending therethrough and a plurality of spaced apart projections having distal ends in contact with an inner surface of the bat.

A trainer for improving an athletic swing includes an elastic band having an anchor end and a handle end, and configured to expand and contract. The trainer further includes a handle coupled to the handle end of the elastic band and configured to be gripped by a user. The trainer further includes a strap coupled to the anchor end of the elastic band and configured to be sandwiched between two objects to anchor the anchor end of the elastic band to at least one of the two objects.