| 摘要 |
A golf green for a patio, deck, floor, substrate or supporting surface with access from below to cut a hole therein includes a U-shaped cup retaining structure mounted to the substrate underside adjacent the hole and into which a cup is slidably inserted and seated in alignment with the hole and the cup having a passageway into which a plug is inserted with the plug having a through hole for receiving the lower end of the golf flag staff, a plurality of ring inserts for placement within the cup to alter the cup diameter and refine golf putting practice, a cover for placement over the cup to conceal the hole so that the substrate, such as the patio, can be safely traversed, and a ball collection apparatus disposed underneath the substrate and into which balls fall by gravity for collection and eventual retrieval.
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