The State of Origin is the ultimate best of three matches sporting event in the area of Rugby League. It features two teams, the Blues from New South Wales and the Maroons from Queensland, who have had a strong rivalry for many years. The three games are played across the period of a few months during the Australian winter. The players for each team are chosen from the cream of the crop in the state, which also adds to the intense gaming action.
Matches for the State of Origin began in the 1980s, and for gaming results in the past, I suggest having a look here.