Before the days of professional rugby union, there was further emphasis on Irish club rugby as opposed to the provincial game. During these times the provincial sides were purely representative sides and games were far less frequent than now. Between 1946 and 2002 the sides would meet annually to contest the Irish Interprovincial Championship and on rare occasion would be tested against touring international sides. When rugby union was declared 'open' in 1995, these four teams became the four professional teams run by the Irish Rugby Football Union and therefore much of the history of the side has been made in the modern era.