Patent attributes
Embodiments of golf club heads and methods to manufacture golf club heads may include a golf club head having a body portion, a first mass portion, a face portion coupled to the front portion of the body portion to close the interior cavity of the body portion, a second mass portion coupled to a back wall portion below a horizontal midplane of the body portion, a port at or proximate to a horizontal midplane of the body portion and connected to the interior cavity, and a polymer material injected in the interior cavity from the port. The first mass portion may be made from a material having a greater density than the polymer material, the second mass portion may be made from a material having a greater density than a material of the body portion, and a total mass of the second mass portion may be greater than or equal to three times a total mass of the first mass portion. Other examples and embodiments may be described and claimed.