A golf club head has a striking face with a plurality of scorelines including a first scoreline and a second scoreline adjacent thereto. The striking face also has a plurality of auxiliary grooves each spaced from the scorelines. In a first imaginary vertical plane, a first path is formed by a first intersection between the first imaginary vertical plane and the striking face, and the auxiliary grooves have a first concentration no less than 0.17 measured between the first and second scorelines. A second imaginary vertical plane is horizontally spaced from the first imaginary plane. A second path is formed in the second imaginary vertical plane by a second intersection between the second imaginary vertical plane and the striking face. The auxiliary grooves in the second imaginary vertical plane have a second concentration that is different from the first concentration measured between the first and second scorelines.

A putter type golf club head having a frontal ball striking face that engages and grips a golf ball during the execution of a putting stroke to direct the golf ball in a straight line toward the intended target. The face includes a plurality of ball striking land areas and a plurality of adjacent and complimentary recessed channels that form an opening toward and on either side of the midpoint of the hitting area of the face. The ball contact areas are smaller than the adjacent recessed channels at the midpoint of the hitting area of the face. Gripping edges at the interface of the land areas and the recessed channels redirect the golf ball toward the intended target when the ball is miss hit away from the midpoint of the face.

Some embodiments include club heads having reinforced club head faces. In one example, the club head comprises a variable face thickness with thickened and thinned regions. The face includes a thinned perimeter region positioned near a perimeter of the face, and a thickened central region positioned over a geometric center of the face. The club head further comprises a 360 undercut that extends along the entire perimeter of the face. The combination of the thinned perimeter region, thickened central region, and 360 undercut reinforces the club head while permitting the face to bend. Other embodiments of related club heads and methods are also disclosed.

A golf club head having a milled planar strike face formed of oxidizable metal material and a plurality of primary grooves, and a first oxidation-prevention coating permanently covering at least a portion of the body. The primary grooves have toeward ends that may be unaligned vertically. A temporary user-removable cover may cover at least a portion of the oxidizable strike face surface area and obscure the view of at least a portion of the plurality of primary grooves, and may incorporate an opening to display a portion of the face and a portion of the plurality of primary grooves, a non-stick tab coupled to a periphery of the temporary user-removable cover, and/or an external layer of plastic-based shrink wrap. The temporary user-removable cover may be adhesively attached to the face to seal an underlying area from environmental exposure and inhibit oxidation.

Disclosed herein is an iron-type golf club head that comprises a strike plate, an enclosed internal cavity, and a rear aperture formed in a rear wall. The iron-type golf club head also comprises a stiffening plug, within the internal cavity and compressed between the back surface of the strike plate and the rear wall. The stiffening plug is insertable, through a rear aperture, into the internal cavity. The iron-type golf club head further comprises a rear fascia covering the rear aperture and at least a portion of the rear wall. A characteristic time (CT) at a geometric center of the strike face is at least 250 microseconds. A maximum thickness of the strike plate, at the strike face, is less than 3.5 millimeters, inclusive. The strike plate, excluding grooves, has a minimum thickness between 1.1 millimeters and 2.2 millimeters.

A shim or badge is affixed to a golf cub body to produce a cap-back iron, giving the appearance of a hollow-body iron. In this way, the golf club can be manufactured with the performance benefits of a game improvement iron, while providing the appearance of a blade, player's iron, and/or a hollow-body iron. For example, by using a lightweight and rigid shim or badge to close a cavity opening in the golf club body, the golf club head can provide increased stiffness in the topline, while maintaining a low CG. Various shim or badge arrangements and materials can be used, and a filler material and/or damper can be included within the cavity to improve sound and feel, while minimizing loss in COR.

A shim or badge is affixed to a golf cub body to produce a cap-back iron, giving the appearance of a hollow-body iron. In this way, the golf club can be manufactured with the performance benefits of a game improvement iron, while providing the appearance of a blade, player's iron, and/or a hollow-body iron. For example, by using a lightweight and rigid shim or badge to close a cavity opening and extend into the toe portion in the golf club body, the golf club head can provide increased stiffness in the topline, while lowering CG. Various shim or badge arrangements and materials can be used, and a filler material and/or damper can be included within the cavity to improve sound and feel, while minimizing loss in COR.

The present disclosure relates to a face for a golf driver including a head for hitting a ball and, a sweet spot point that is a center position of a roll, which is formed in a round shape from the top to the bottom in the front of a head body constituting the head, and a bulge, which is formed in a round shape to the left and right sides thereof, for hitting the ball, and a sweet spot area, which is a specific portion around the sweet spot point, the face include: a sweet spot plane obtained by flattening the sweet spot area of the face; and toe planes and heel planes maintaining roll and bulge lines, and formed in multiple stages in toe and heel areas on the left and right sides of the sweet spot area.

A golf club head with a hosel hole cover that helps improve the performance of the golf club head is disclosed. More specifically, the present invention relates to a golf club head having a hosel hole cover at a bottom portion of an interchangeable connection system that not only provides improved performance of the golf club head by strategically utilizing an existing opening to adjust the weighting of a golf club head, but it also improves the aerodynamics of the golf club head by eliminating undesirable recesses that could be detrimental to the aerodynamics of a golf club head.

A golf club head with a hosel hole cover that helps improve the performance of the golf club head is disclosed. More specifically, the present invention relates to a golf club head having a hosel hole cover at a bottom portion of an interchangeable connection system that not only provides improved performance of the golf club head by strategically utilizing an existing opening to adjust the weighting of a golf club head, but it also improves the aerodynamics of the golf club head by eliminating undesirable recesses that could be detrimental to the aerodynamics of a golf club head.