Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region hounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head comprises a loft angle no less than 18°, a striking face, a sole portion, and a top portion having an exterior surface. In an imaginary vertical plane spaced from a face center by no more than 10 mm and perpendicular to an imaginary striking face plane, an imaginary line segment has a length of 25 mm, a first endpoint located in the imaginary striking face plane, a second endpoint located above the exterior surface, and forms an angle ? with the striking face plane between 55° and 65°. The line segment is tangent to the exterior surface at a first point. A second point is located on the imaginary line segment and spaced from the first point by no less than 1 mm. The second point is spaced from the exterior surface by a gap distance that is no greater than 0.15 mm.

Abstract: A method of manufacturing a golf club head includes: (a) providing a model of a golf club head, the model including a striking face portion and a first plurality of structural attributes; (b) generating first data comprising relationship information between locations about the striking face and predicted coefficient of restitution or characteristic time values based on modeled golf ball impact; (c) providing second data comprising relationship information between generalized striking face position and impact probability; (d) calculating a first expected overall performance value based on the first data and the second data; (e) modifying the first plurality of structural attributes based on the first expected overall performance value, resulting in a second plurality of structural attributes different from the first plurality of structural attributes; and (f) forming a golf club head having club head structural attributes corresponding to the second plurality of structural attributes of the model.

Abstract: A golf club head comprises a loft angle no less than 18°, a striking face, a sole portion, and a top portion having an exterior surface. In an imaginary vertical plane spaced from a face center by no more than 10 mm and perpendicular to an imaginary striking face plane, an imaginary line segment has a length of 25 mm, a first endpoint located in the imaginary striking face plane, a second endpoint located above the exterior surface, and forms an angle ? with the striking face plane between 55° and 65°. The line segment is tangent to the exterior surface at a first point. A second point is located on the imaginary line segment and spaced from the first point by no less than 1 mm. The second point is spaced from the exterior surface by a gap distance that is no greater than 0.15 mm.

Abstract: The present application is direction to a computing device having a memory and a processor. The processor is configured to receive data generated in response to a motion of a sporting apparatus, where the data includes a first data relating to a first characteristic of the motion of the sporting apparatus. The first data is based on a comparison between at least two different directional segments of a path created by a first location on the sporting apparatus during the motion of the sporting apparatus. The processor is further configured to analyze the data to determine a skill value, determine a recommended sporting apparatus from a group of at least two sporting apparatuses based on the skill value; and transmit information relating to the recommended sporting apparatus.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: A correlated set of golf club heads comprises a first and second golf club head. Each club head has a striking face, a rear surface, a top portion, a sole portion, a toe portion, a heel portion, and a loft. The striking face has a first plurality of scorelines defining a scoreline heel-ward extent and a scoreline toe-ward extent. The plurality of scorelines comprises a scoreline length LS1 being the lateral distance between the heel-ward extent and the toe-ward extent. The loft of the second golf club head is greater than that of the first golf club head. The scoreline length LS2 of the second golf club head differs from that of the first scoreline length LS1.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region hounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: A golf club head includes a striking face with a plurality of scorelines. A first virtual vertical plane is perpendicular to the striking face and passes through a toe-wardmost extent of the scorelines, and a second virtual vertical plane is parallel to the first virtual vertical plane and passes through a heel-wardmost extent of the scorelines. A central region bounded by the first virtual vertical plane, the second virtual vertical plane, and a striking face periphery has a first average surface roughness Ra1 of between about 40 ?in and about 180 ?in. And a majority of a toe region bounded by the first vertical plane and the striking face periphery is textured to have a second average surface roughness Ra2 no less than 1.5 times Ra1.

Abstract: The present application is directed to a method for use in a system implementing a reference golf club, one or more sensors associated with the reference golf club, and a computing device.

Abstract: A golf club includes a club head having a volume of greater than about 360 cm3 and a mass less than 200 g. A shaft attachable to the club head has a tip end, a butt end, and a shaft balance point distance, BPs, as measured from the butt end, of no more than 19 inches. And the golf club has a mass less than 300 g.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: A golf club head according to one or more aspects of the present invention may include a face portion or strike-face wall comprising a top inner boundary, an intermediate inner boundary, and a bottom inner boundary having a bottom-inner-boundary toe portion and a bottom-inner-boundary heel portion. The strike-face wall may further include a first uniform-thickness region, adjoining the top inner boundary, and a variable-thickness region adjoining the uniform-thickness region and a majority of the bottom inner boundary. In another example, the variable-thickness may adjoin a majority of the top inner boundary and the uniform-thickness region may adjoin a majority of the bottom inner boundary.

Abstract: An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Abstract: The present application is direction to a computing device having a memory and a processor. The processor is configured to receive data generated in response to a motion of a sporting apparatus, where the data includes a first data relating to a first characteristic of the motion of the sporting apparatus. The first data is based on a comparison between at least two different directional segments of a path created by a first location on the sporting apparatus during the motion of the sporting apparatus. The processor is further configured to analyze the data to determine a skill value, determine a recommended sporting apparatus from a group of at least two sporting apparatuses based on the skill value; and transmit information relating to the recommended sporting apparatus.

Abstract: A golf club head comprises a loft angle no less than 18°, a striking face, a sole portion, and a top portion having an exterior surface. In an imaginary vertical plane spaced from a face center by no more than 10 mm and perpendicular to an imaginary striking face plane, an imaginary line segment has a length of 25 mm, a first endpoint located in the imaginary striking face plane, a second endpoint located above the exterior surface, and forms an angle ? with the striking face plane between 55° and 65°. The line segment is tangent to the exterior surface at a first point. A second point is located on the imaginary line segment and spaced from the first point by no less than 1 mm. The second point is spaced from the exterior surface by a gap distance that is no greater than 0.15 mm.

Abstract: A golf club includes a club head having a volume of greater than about 360 cm3 and a mass less than 200 g. A shaft attachable to the club head has a tip end, a butt end, and a shaft balance point distance, BPs, as measured from the butt end, of no more than 19 inches. And the golf club has a mass less than 300 g.