The ornamental design for a golfballdisplayrack, as shown and described.
FIG. 1 is a front elevational view of a golf ball display rack showing my
new design, the undisclosed rear is unadorned, and the broken lines shown
are for illustrative purposes only, forming no part of the claimed design;
FIG. 2 is a side elevational view thereof with the other side being a
mirror image thereof;