Examples of golf clubs and methods to manufacture golf clubs are generally described herein. In one example, a golf club may include a golf club head having a body portion and a center of gravity. A center portion of the body portion may extend from a front portion of the body portion to the rear portion of the body portion. A recess portion may be defined by the center portion. A hosel portion may extend upward from the recess portion. The hosel portion may be positioned at the center of gravity of the body portion. A shaft may be coupled to the hosel portion and extend from the hosel portion. The shaft may have a center axis that passes through the center of gravity of the golf club head. Other examples of golf club heads and methods to manufacture the same may be described and claimed.

A golf club head that is capable improving on the inertia properties of a golf club head all while also improving the Center of Gravity (CG) location is disclosed herein. More specifically, the golf club head in accordance with the present invention achieves a relative low Moment of Inertia (MOI) about the Z-axis (MOI-Z) as well as a relatively low MOI about the Shaft-axis (MOI-SA), all combined with a high MOI about the X and Y-axis (MOI-X and MOI-Y) and maintaining a consistently and relatively low CG location measured along a direction tangent to the hosel axis along the X-Y plane (CG-B). The golf club head includes a frontal portion and a rear portion which may be secured together with rotational motion.

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 includes a hollow body portion including a material having a first density and an interior cavity. A face pocket portion may be in the first interior cavity at or proximate to the front portion of the body portion, define a second interior cavity, and at least partially enclose the first interior cavity. A face portion is coupled to the front portion to enclose the second interior cavity. A first filler material may be injected into the first interior cavity from an external port. A second filler material may fill the second interior cavity. The first filler material and the second filler material may have at least one different physical property. Other examples and embodiments may be described and claimed.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head includes a top portion having a heel-side portion, a toe-side portion, and a raised central top portion with an opening. A shoulder portion extends inward toward the opening and a crown portion is attached to the shoulder portion and covers the opening. The bottom portion includes a central protrusion between a heel-side dividing plane and a toe-side dividing plane, a toe-side protrusion between the toe-side dividing plane and a toe-side bounding plane, and a heel-side protrusion between the heel-side dividing plane and a heel-side bounding plane. A distance between the toe-side dividing plane and the heel-side dividing plane is about equal to a diameter of a golf ball. Other examples and embodiments may be described and claimed.

A method of customizing a golf club head for a user's swing begins by receiving an indication of a characteristic of a user's golf swing. A club face is selected from a plurality of club faces based on the characteristic, and a club body is selected from a plurality of club bodies based on the characteristic. The selected club face and club body are then affixed together to define a golf club head. Each of the plurality of club faces and plurality of club bodies are freely interchangeable.

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 a toe portion, a heel portion, a top portion, a sole portion, a rear portion, and a front portion having a face portion with a face portion thickness extending between a front surface and a back surface. The body portion may be associated with a body portion volume. The golf club head may also include an interior cavity. The interior cavity may include an elastic polymer material including a radiocontrast material. Other examples and embodiments may be described and claimed.

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 includes a recessed opening between a front opening and a back wall portion, a front plate portion coupled to the recessed opening to enclose a first interior cavity in the golf club head between the front plate portion and the back wall portion, a face portion coupled to a front portion to enclose a second interior cavity between the face portion and the front plate 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 filler material and the second filler material have at least one different physical property. Other examples and embodiments may be described and claimed.

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.

An iron-type golf club head is disclosed having a heel portion, a sole portion, a toe portion, a top-line portion, a front portion, a rear portion, and a striking face. A back wall is also disclosed in the rear portion enclosing a portion of the rear portion to create an enclosed cavity. The cavity is defined by at least a rear surface of the striking face, an inner back wall surface, and the sole portion. A plug and a filler material is located within the enclosed cavity. The filler material surrounds the plug and is configured to hold the plug in place. The plug is lighter than the filler material.

A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a rear surface, and a body connected to the face. The body has a sole member and a rear cavity defined at least partially by the sole member and the rear surface of the face. The body has an elongated, recessed channel extending within the cavity along a juncture line between the rear surface of the face and the sole member. Additionally, the head is formed in part by a face member having a first leg forming at least a major portion of the face and a second leg extending rearwardly from a bottom end of the first leg and forming at least a portion of the sole member. The head may further be formed by a body member connected to the face member.