That rivalry has continued during the professional era and intensified as Connacht have more competitive in the domestic league, winning 2015-16 Pro12 championship.
Connacht and Ulster comprise two of the four Irish provincial teams competing in the United Rugby Championship (formerly known as the Celtic League).
[1] Connacht also went 58 years without winning a match in Belfast.
[2] Below are the historical results of the Irish Rugby Football Union teams, Ulster and Connacht, as part of the IRFU Interprovincial Championship, and later the Celtic League, Pro12, Pro14, and United Rugby Championship.
[3][4][5] Highest scoring match 2013–14: 70 points (Ulster 58 Connacht 12) Lowest scoring match 1965–66: 6 points (Ulster 3 Connacht 3) Highest margin of victory Ulster: 46 points (58–12 in 2013–14) Connacht: 28 points (44–16 at home in 2017–18) Most consecutive wins Ulster: 13 (1966–1979) Connacht: 3 (1954–1957, 2017–2019)