The provincial championships were introduced in 1888 in Munster, Leinster, Connacht and Ulster on a knock-out basis. The winners of the provincial finals participated in the All-Ireland semi-finals. Over time the Leinster and Munster teams grew to become the superpowers of the game, as Gaelic football was the more dominant sport in Ulster and Connacht. After some time Galway became the only credible team in Connacht and was essentially given an automatic pass to the All-Ireland semi-final every year. This knock-out system persisted for over 100 years and was considered to be the fairest system as the All-Ireland champions would always be the only undefeated team of the year.