A golf cup insert has an integral annular outer flange resting on an inner annular
ring molded into a vertical hole in a portable golf practice panel. The vertical
hole has an inside diameter slightly larger than the outside diameter of the golf
cup insert and flange. Multiple exterior arches along an outside annular wall of
the golf cup insert engage slots in the inner annular ring so that by dropping
the golf cup insert into the vertical hole the arches slide through the slots.
A turn of the golf cup insert locks the insert in place, but permits the cup insert
to move transversely in the vertical hole.
