A marking system for a baseball bat includes a bat including a barrel extending along a central longitudinal axis, the barrel defining a minimal vibration region. The marking system also includes a sheet having a first edge, a second edge positioned opposite the first edge, a third edge positioned between the first and the second edges, and a fourth edge positioned opposite the third edge, the first edge having a first curvature and the second edge having a second curvature, the sheet adapted to at least partially encircle a portion of the barrel of the bat. Additionally, a first positioning feature is disposed on the sheet, and a first alignment feature is disposed proximate the first edge of the sheet. Furthermore, the first positioning feature may be configured to be positioned adjacent to at least a portion of the minimal vibration region.

A goalkeeper's hockey stick with an angled shaft is disclosed. The goalkeeper stick is comprised of a shaft, paddle and blade. The shaft connects to the paddle which connects to the blade. The portion of the shaft where it connects to the paddle is beveled to provide a grip portion of the shaft where the goalkeeper's gloved hand can grip the stick in a way that provides a more ergonomic position for the goalkeeper's hand.

A goalkeeper's hockey stick with an angled shaft is disclosed. The goalkeeper stick is comprised of a shaft, paddle and blade. The shaft connects to the paddle which connects to the blade. The portion of the shaft where it connects to the paddle is beveled to provide a grip portion of the shaft where the goalkeeper's gloved hand can grip the stick in a way that provides a more ergonomic position for the goalkeeper's hand.

A golf club head with plate-like, heel and toe side internal stiffeners is disclosed herein. Each stiffener has a planar portion extending approximately parallel with a portion of the striking face, and is entirely disposed within an interior cavity of the golf club head. The heel side stiffener is connected to top, sole, and heel walls of the club head, with a toe-side edge unconnected to any other portion of the head, and the toe side stiffener is connected to the top, sole, and toe walls of the club head, with a heel-side edge unconnected to any other portion of the head. The toe and heel side edges may have large concavities that distribute mass away from the geometric face center and toward the heel and toe sides of the golf club head.

A system and methods for custom-fitting golf clubs and golf club components is disclosed. Data is generated by a tracking device as a plurality of golf swings are performed by an individual. The data comprises motion and orientation information associated with a golf ball and with a golf club. The data is displayed using a graphical user interface. A plurality of shot characteristics is determined from the data. The shot characteristics are used to recommend golf clubs and golf club components that adjust a golfer's swing where the golfer exhibits the plurality of shot characteristics.

A system and methods for custom-fitting golf clubs and golf club components is disclosed. Data is generated by a tracking device as a plurality of golf swings are performed by an individual. The data comprises motion and orientation information associated with a golf ball and with a golf club. The data is displayed using a graphical user interface. A plurality of shot characteristics is determined from the data. The shot characteristics are used to recommend golf clubs and golf club components that adjust a golfer's swing where the golfer exhibits the plurality of shot characteristics.

A system for optimizing weight distribution of a golf club including a weight receiving grip, the weight receiving grip configured to be affixed to a proximal end of a golf club shaft, wherein the weight receiving grip comprises a generally tubular member comprising a shaft bore configured to surround a proximal portion of the shaft, wherein the weight receiving grip comprises a weight retention portion at a proximal end of the weight receiving grip, the weight retention portion configured to engage a weight member, a grip expanding tool configured to deflect a portion of the weight receiving grip facilitating installation or removal of the weight members from the weight receiving grip.

A system for optimizing weight distribution of a golf club including a weight receiving grip, the weight receiving grip configured to be affixed to a proximal end of a golf club shaft, wherein the weight receiving grip comprises a generally tubular member comprising a shaft bore configured to surround a proximal portion of the shaft, wherein the weight receiving grip comprises a weight retention portion at a proximal end of the weight receiving grip, the weight retention portion configured to engage a weight member, a grip expanding tool configured to deflect a portion of the weight receiving grip facilitating installation or removal of the weight members from the weight receiving grip.

A golf club head comprising a body, an elevated weight bar, and at least one stiffening member is disclosed herein. The elevated weight bar is disposed within a hollow cavity portion of the body and bridges at least a portion of a bottom section of the body, and the at least one stiffening member is also disposed within the hollow cavity portion, extending from a top line section to bottom section of the body and passing through the elevated weight bar without making contact with the elevated weight bar. The elevated weight bar, which is preferably composed of a higher density material than that of the body, may be formed separately from the rest of the body and then affixed to the body by welding or a mechanical fastener.

Methods of manufacturing a golf club head comprising one or more stiffening members proximate the face, and particularly solid rods or a plate with one or more cutouts, is disclosed herein. One method comprises the steps of preparing a wax mold of a golf club head including a plate stiffening member with excess material, casting the golf club head, and machining away the excess material. Another method comprises the steps of casting a golf club body, providing a plate stiffening member, providing a face component such as a face cup, tack welding the plate stiffening member and the face component to the golf club body, and welding these parts together.