Abstract: Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are described herein. In one example, a golf club head includes a body portion having an interior cavity, a back opening portion, a back cover portion covering the back opening portion, a filler material at least partially filling the interior cavity, a first mass portion coupled to the back cover portion, and a second mass portion coupled to the back cover portion. The body portion may be made from a first material having a first density, and the back cover portion may be made from second material having a second density different from the first density. The diameter of the second mass portion may be greater than a diameter of the first mass portion. Other examples and embodiments may be described and claimed.

Abstract: 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 having a front portion, a first interior cavity in the body portion having a first opening in the front portion, a second interior cavity at least partially surrounded by the first interior cavity and having a second opening in the front portion, a first filler material at least partially filling the first interior cavity, and a second filler material at least partially filling the second interior cavity. The first face portion is attached to the front portion to close the first opening. The second face portion is attached to the front portion to close the second opening. The first filler material and the second filler material have at least one different physical property. Other examples and embodiments may be described and claimed.

Abstract: 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 having a toe portion with a toe portion edge, a hosel portion, a top portion with a top portion edge, a sole portion with a sole portion edge, a front portion, a back portion with a back wall portion, and an interior cavity having a first recessed portion having a center portion of the interior cavity including a maximum width of the interior cavity, and a second recessed portion at least partially surrounding the first recessed portion and located proximate to a perimeter portion of the body portion. A first filler material is in the first recessed portion, and a second filler material is in the second recessed portion. The first filler material and at least a portion of the second filler material engage an inner surface of the back wall portion.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. A golf club head includes a means for defining an interior cavity including a first material having a first density. The golf club head also includes a first means for increasing a moment of inertia of the means for defining the interior cavity, a second means for increasing a moment of inertia of the means for defining the interior cavity, and a third means for increasing a moment of inertia of the means for defining the interior cavity. The first, second, and third means include a second material having a second density greater than the first density. A portion of the first, second, and third means define visible portions of a back wall portion of the means for defining an interior cavity. Other examples and embodiments may be described and claimed.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a first body portion being hollow to define an interior cavity, a first body portion recess on a back wall portion below a horizontal midplane of the first body portion, and a second body portion removably coupled to the first body portion in the first body portion recess. The golf club head may include at least one fastener configured to fasten the second body portion to the first body portion, and a face portion having a back surface opposite the front surface and associated with a total back surface area. The back surface may include first back surface region associated with a first back surface area and coupled to a front portion of the first body portion. The face portion may include a second back surface region exposed to the interior cavity and associated with a second back surface area.

Abstract: 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 including an interior cavity, a filler material in the interior cavity, and a face portion having a front surface, a back surface, a face perimeter defined by a face toe edge, a face heel edge, a face top edge, and a face sole edge.

Abstract: Embodiments of golf club heads comprising a head interior and a hosel structure, the head interior bounded by a head front portion, a head rear portion, a head heel portion, a head toe portion, a head top portion, and a head sole portion, the golf club heads further comprising various optimized characteristics, are presented herein. Other examples and related methods are also disclosed herein.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a top portion, a bottom portion, a toe portion, a heel portion, a front portion, a rear portion, and a skirt portion defined as a side portion of the golf club head located between the top portion and the bottom portion and extending across a periphery of the golf club head from the toe portion, around the rear portion, and to the heel portion. The golf club head may include a structural support extending from the skirt portion on a toe side of the golf club head, across the bottom portion, and to the skirt portion on a heel side of the golf club head. Other examples and embodiments may be described and claimed.

Abstract: Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion with an interior cavity, an upper back wall portion, a lower back wall portion, a ledge portion extending from the upper back wall portion to the lower back wall portion, an upper back wall portion thickness, and a lower back wall portion thickness. The golf club head may further include a first mass portion below the ledge portion, a second mass portion above the ledge portion, a polymer material in the interior cavity, a first width of the interior cavity above the ledge portion, a second width of the interior cavity below the ledge portion and above the lower back wall portion thickness, and a third width of the interior cavity below the second width.

Abstract: 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 including an interior cavity, a filler material in the interior cavity, and a face portion having a front surface, a back surface, a face perimeter defined by a face toe edge, a face heel edge, a face top edge, and a face sole edge.