A club head with a variable face thickness includes a body having a toe, heel, sole, and top portion. The loft angle LA and the club head mass mh satisfy mh=2.1 g/degree*LA+a, where 190 g<a<210 g, and the club head has a blade length less than 80 mm. A striking face of the club head has a face center, and defines a face plane. A virtual center plane extends vertically through the face center perpendicularly to the face plane. A center of gravity of the club head is located not more than 2.0 mm from the virtual center plane, and a moment of inertia about a vertical axis extending through the center of gravity satisfies: Izz>mh*9.3 cm.sup.2. In one aspect, a face insert including the striking face has a mass mf such that mf/mh is less than or equal to 0.22.

A head includes a face part, a sole part, and a hosel part. The face part includes a hitting surface and a face back surface. A plurality of score lines are formed on the hitting surface. One or two or more back grooves are formed on the face back surface. With reference to a face center, the face part is divided into four regions: a toe upper region; a toe lower region; a heel upper region; and a heel lower region, and back-groove projected areas of at least two regions out of the four regions are different from each other. Back-groove occupation ratios of at least two regions out of the four regions may be different from each other.

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head may include a body portion with an interior cavity and a port having an opening to the interior cavity. A polymer material is injected into the interior cavity from the port. The golf club head may further include a first mass portion and a second mass portion. The first mass portion may have a first end, a second end, and a first mass portion distance between the first end and the second end. The second mass portion may be coupled to the back wall portion below a horizontal midplane of the body portion. The second mass portion may include a first end, a second end, and a second mass portion distance between the first end and the second end. The total mass of the second mass portion may be greater than a total mass of the first mass portion, and the second mass portion distance may be greater than the first mass portion distance. Other examples and embodiments may be described and claimed.

A method comprising, in a striking face of a golf club head, the striking face being formed of a first material having a first hardness, creating a plurality of initial grooves, the initial grooves having a first cross-sectional area (A.sub.1) and a first pitch (P.sub.1) such that A.sub.1/P.sub.1>0.0030 in. The method continues with modifying the initial grooves at least by positioning a second material in each of the plurality of initial grooves, the second material having a second hardness that is less than the first hardness, such that the first material and the second material form a plurality of final grooves each having a second cross-sectional area (A.sub.2) and a second pitch (P.sub.2) such that A.sub.2/P.sub.2<0.0030 in.

Described herein is a tour iron having a golf club head with a faceplate, a body, and an insert. A sole, top rail, rear, and the faceplate enclose a cavity within the body. The cavity can house the insert. The insert can comprise a low-density material, allowing weight to be concentrated around the peripheral edge of the golf club head. The rear of the golf club head has an inflection seam running from the heel to the toe. The golf club head has an upper portion, above the inflection seam and a lower portion below the inflection seam. The upper portion can have a rear opening. The faceplate, body, and insert can be formed of different materials having different densities. The golf club head has a comparatively high moment of inertia and a low center of gravity. Other embodiments and methods are described herein.

A golf club head including a striking face, a periphery portion surrounding and extending rearwards from the striking face, wherein the striking face comprises a front surface configured to strike a golf ball and a rear surface opposite the front surface, a support arm spaced from the rear surface of the striking face, the support arm extending from the periphery portion, wherein the support arm is affixed to the periphery portion at two distinct locations, a damping element residing between the support arm and the rear surface of the striking face, wherein the damping element comprises a front surface in contact with the rear surface of the striking face and a rear surface in contact with the support arm, wherein the support arm extends substantially parallel a horizontal axis.

Embodiments of golf club head faceplates comprising a lattice to improve the energy storage capabilities and minimize stress concentrations are described herein. The lattice can comprise a plurality of flexure shapes that facilitate in faceplate bending. The flexure shapes of the lattice can comprise a reentrant, concave, or non-convex shape. The lattice can comprise at least one repeating pattern of flexure shapes that can be interconnected or spaced apart. During golf ball impacts, the flexure shapes flex to store energy through linear and torsional bending.

A golf club head having a laser-generated features to create contrast on the club face of the golf club head. The club face includes a central region, a toe region, and a heel region. The central region includes a first plurality of laser-generated features that provide a height-intersection coverage of the central region, a width-intersection coverage of the central region, and a surface-area coverage of the central region. The toe region includes a second plurality of laser-generated features that provide a height-intersection coverage of the toe region, a width-intersection coverage of the toe region, and a surface-area coverage of the toe region. The heel region includes a third plurality of laser-generated features that provide a height-intersection coverage of the heel region, a width-intersection coverage of the heel region, and a surface-area coverage of the heel region.

A golf club head including a striking face; a periphery portion surrounding and extending rearwards from the striking face; wherein the striking face comprises a front surface configured to strike a golf ball and a rear surface opposite the front surface; a support arm spaced from the rear surface of the striking face; wherein the support arm abuts the periphery portion at two distinct locations; a damping element residing between the support arm and the rear surface of the striking face; wherein the damping element comprises a front surface in contact with the rear surface of the striking face and a rear surface in contact with the support arm.

A golf club is disclosed that has a golf club head with a face having peaks or ridges and deep grooves or valleys. The deep grooves or valleys promote improved “feel” and/or reduced “smash factor” which may be particularly desirable when the golf club head comprises a putter face. The deep grooves or valleys may eliminate the need for costly soft metal alloy faces and/or polymeric or other resilient inserts between the face and the body of the golf club head.