 There are four professional Irish teams; all four play in the [[Pro14]] and at least three compete for the [[Heineken Cup]].Irish rugby has become increasingly competitive at both the international and provincial levels since the sport went professional in 1994.During that time, [[Ulster Rugby|Ulster]] ([[1998–99 Heineken Cup|1999]]), [[Munster Rugby|Munster]] ([[2005–06 Heineken Cup|2006]] and [[2007–08 Heineken Cup|2008]]) and [[Leinster Rugby|Leinster]] ([[2008–09 Heineken Cup|2009]], [[2010–11 Heineken Cup|2011]] and [[2011–12 Heineken Cup|2012]]) have won the Heineken Cup.