Master Caddie's Krabby was brought out so that the Master Caddie could show off his golf skills on the challenging and secluded Tenth Hole of Doom. He used its claws as a club and it looked like his shot was going to go in until the last second a gust of wind blew it away.
Crab and club are spelt and pronounced the same way in Japanese (
Kurabu クラブ).