I claim the ornamental design for a golf ball shaped leash holder, as shown and described.
FIG. 1 is an isometric view of a golf ball shaped leash holder showing my new design; and,
FIG. 2 is an isometric view of a second embodiment of a golf ball shaped leash holder showing my new design.
The broken lines immediately adjacent the solid line areas of the design represent the bounds of the claim and all other broken lines are for illustrative purposes only. None of the broken lines form a part of the claimed design.