FIG. 1 is a perspective view of a first embodiment of a sole of a golf club head, as viewed from a rear and under position, view showing the subject design;

FIG. 2 is a perspective view of the first embodiment of the sole of a golf club head, as viewed from a front and under position, view showing the subject design;

FIG. 3 is a front view of the first embodiment of the sole of a golf club head shown in FIG. 1;

FIG. 4 is a rear view of the first embodiment of the sole of a golf club head shown in Fig. 3;

FIG. 5 is a right side view the first embodiment of the sole of a golf club head shown in FIG. 3;

FIG. 6 is a left side view of the first embodiment of the sole of a golf club head shown in FIG. 3;

FIG. 7 is a bottom plan view of the first embodiment of the sole of a golf club head shown in FIG. 3;

FIG. 8 is a sectional view of the first embodiment of the sole of a golf club head, taken along a line 8--8 in FIG. 4;

FIG. 9 is a sectional view of the first embodiment of the sole of a golf club head, taken along a line 9--9 in FIG. 5;

FIG. 10 is a perspective view of a second embodiment of a sole of a golf club head, as viewed from a rear and under position, view showing the subject design;

FIG. 11 is a perspective view of the second embodiment of the sole of a golf club head, as viewed from a front and under position, view showing the subject design;

FIG. 12 is a front view of the second embodiment of the sole of a golf club head shown in FIG. 10;

FIG. 13 is a rear view of the second embodiment of the sole of a golf club head shown in FIG. 12;

FIG. 14 is a right side view the second embodiment of the sole of a golf club head shown in FIG. 12;

FIG. 15 is a left side view of the second embodiment of the sole of a golf club head shown in FIG. 12; and,

FIG. 16 is a bottom plan view of the second embodiment of the sole of a golf club head shown in FIG. 12.

The broken line showing of the golf club head is for illustrative purposes only and forms no part of the claimed design.