The MacRobertson Shield Test Match Series was inaugurated in 1925, sixty-four years before the World Croquet Federation was established in 1989. The "Mac", as it is known to croquet players, was initially for competition between teams representing England and Australia.
New Zealand was admitted in 1930 and the United States of America in 1993.
The Association Croquet World Team Championship was established in 2010 to extend the opportunities for team competition to other countries. The Mac immediately became Tier 1 and the flagship of the new championship.