Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate coupled to the body across the opening, and a fill material. The wall defines a first set of apertures and a second aperture, and includes an outer peripheral surface, a sole and a rear wall portion extending from the heel to the toe. The wall and the faceplate define a rearward-facing back cavity. The sole, the rear wall portion and the faceplate define a lower cavity that is continuous with the back cavity. The first set of apertures and the second aperture extend through the wall from the peripheral outer surface to, and are continuous with, the lower cavity. The first set of apertures and the second aperture extend about first and second planes, respectively. The fill material substantially fills the lower cavity and the first set of apertures and the second aperture.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate coupled to the body across the opening, first and second sets of apertures, and a fill material. The wall has an outer peripheral surface, a sole, a toe, a heel, a topline and a rear wall portion extending from the heel to the toe. The wall and the faceplate define a rearward-facing back cavity, and the sole, the rear wall portion and the faceplate define a lower cavity that is continuous with the back cavity. The first and second sets of apertures extend through the wall from the peripheral outer surface to, and are continuous with, the lower cavity. The first and second sets of apertures extend about first and second planes, respectively. The fill material substantially fills the lower cavity and the first and second sets of apertures.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate coupled to the body across the opening, first and second sets of apertures, and a fill material. The wall has an outer peripheral surface, a sole, a toe, a heel, a topline and a rear wall portion extending from the heel to the toe. The wall and the faceplate define a rearward-facing back cavity, and the sole, the rear wall portion and the faceplate define a lower cavity that is continuous with the back cavity. The first and second sets of apertures extend through the wall from the peripheral outer surface to, and are continuous with, the lower cavity. The first and second sets of apertures extend about first and second planes, respectively. The fill material substantially fills the lower cavity and the first and second sets of apertures.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate coupled to the body across the opening, a first set of apertures, and at least one second aperture. The wall has an outer peripheral surface, a sole, a toe and a topline. The wall and the faceplate define a rearward-facing cavity. The first set of apertures extends through the wall from the peripheral outer surface to the cavity. The first set of apertures extends about a first plane. The at least one second aperture extends through the wall from the peripheral outer surface to the cavity. The at least one second aperture extends about a second plane.

Abstract: A golf club head may comprise a hosel portion, a front strike face, a sole, a crown and micro-vortex generators projecting from a surface of the crown. The micro-vortex generators may comprise a first elongated micro-vortex generator angled with respect to the front strike face and a second elongated micro-vortex generator having a front end rearward of the first micro-vortex generator.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate coupled to the body across the opening, a first set of apertures, and at least one second aperture. The wall has an outer peripheral surface, a sole, a toe and a topline. The wall and the faceplate define a rearward-facing cavity. The first set of apertures extends through the wall from the peripheral outer surface to the cavity. The first set of apertures extends about a first plane. The at least one second aperture extends through the wall from the peripheral outer surface to the cavity. The at least one second aperture extends about a second plane.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate, at least four apertures extending through the wall, and at least four plugs. The wall has and outer peripheral surface and a first hardness value. The faceplate is coupled to the body across the opening. The wall and the faceplate defining a rearward-facing cavity. The at least four apertures extend through the wall from the peripheral outer surface to the cavity. The at least four plugs are positioned within the at least four apertures, respectively, and the at least four plugs have separate hardness values. The separate hardness values are less than the first hardness value.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate, at least first and second apertures extending through the wall, and at least first and second plugs. The wall has and outer peripheral surface and a first hardness. The faceplate is coupled to the body across the opening. The wall and the faceplate defining a rearward-facing cavity. The first and second apertures extend through the wall from the peripheral outer surface to the cavity. The at least first and second plugs are positioned within the at least first and second apertures, respectively, and the first and second plugs have second and third hardnesses, respectively. Each of the second and third hardnesses is less than the first hardness.

Abstract: An iron-type golf club head includes a body having a wall extending about an opening, a faceplate, at least first and second apertures extending through the wall, and at least first and second plugs. The wall has and outer peripheral surface and a first hardness. The faceplate is coupled to the body across the opening. The wall and the faceplate defining a rearward-facing cavity. The first and second apertures extend through the wall from the peripheral outer surface to the cavity. The at least first and second plugs are positioned within the at least first and second apertures, respectively, and the first and second plugs have second and third hardnesses, respectively. Each of the second and third hardnesses is less than the first hardness.

Abstract: A putter head including a toe portion, a heel portion, a generally vertically extending wall and an insert. The wall has a front strike face, a rear surface, an upper layer, and a lower layer. The upper layer, the lower layer and the rear surface each extend from the heel portion to the toe portion to define a recess rearwardly extending into the wall from the strike face. The rear surface of the wall is formed with variable thickness thereby providing the recess with a variable rearward depth. The insert substantially fills the recess and connects to the wall. The insert has a front surface, a top surface, a bottom surface and a rear surface. The front surface is exposed, while the top and bottom surfaces are substantially covered by the wall.

Abstract: A grip for mounting to a butt end of a golf putter shaft. The grip includes an elongate tubular body having a bore extending along a longitudinal axis and an open distal end. The body has a front face, a back face, and first and second side faces. The body also has a distal portion, a butt end portion, and a central portion positioned between the distal and butt end portions. The front face and the rear face have front and rear transverse thicknesses, respectively. The front and rear transverse thicknesses are measured at the central portion of the body along a first longitudinal plane extending through a forward most region of the front face, the longitudinal axis and a rearward region of the back face. The ratio of the rear transverse thickness to the front transverse thickness is at least five to one.

Abstract: A putter head including a toe portion, a heel portion, a generally vertically extending wall and an insert. The wall has a front strike face, a rear surface, an upper layer, and a lower layer. The upper layer, the lower layer and the rear surface each extend from the heel portion to the toe portion to define a recess rearwardly extending into the wall from the strike face. The rear surface of the wall is formed with variable thickness thereby providing the recess with a variable rearward depth. The insert substantially fills the recess and connects to the wall. The insert has a front surface, a top surface, a bottom surface and a rear surface. The front surface is exposed, while the top and bottom surfaces are substantially covered by the wall.