The ornamental design for a V-shaped central section defined by grooves on a face of a golfclub head, as shown.
Also incorporated by reference herein in its entirety is the U.S. Design Patent Application titled “Golf Club Head” (Ser. No. 29/201,888), filed Mar. 23, 2004.
The FIGURE is a front view of a V-shaped central section defined by grooves on a face of a golf club head according to a preferred embodiment of my new design.
The broken lines in an area surrounding grooves in accordance with our new design are illustrative of exemplary golf club heads that show environments in which a V-shaped central section defined by grooves on a face of a golf club head are associated. The exemplary golf club heads do not form a part of the claimed design.