The CSA 4-Day Domestic Series is the domestic first class cricket competition of South Africa. The tournament is contested by teams from all nine provinces of South Africa. First contested as the Currie Cup from 1889–90, the tournament has undergone many changes and modifications in its history. In 2004, the traditional province based format was replaced, with many teams amalgamating. In its place six entirely professional franchises were created that represented much larger population areas.