The –13 Pro12 League was the 12th season of the rugby union competition originally known as the Celtic League, the third with its current 12 -team format, and the second with RaboDirect as title sponsor. Top point scorer : Ian Madigan ( Leinster ); (. The official website for the Guinness PRO12 comprising of Irish, Welsh, Scottish and Italian clubs. Find out the upcoming fixtures for the Rugby Union Pro12 on BBC Sport. Naoupu 3' m Vainikolo 17' c Con: Dirksen 24' c Con: World Cup Six Nations. Retrieved 9 June Pace 18' c Con: Inan agreement was made between the Irish Rugby Football Union IRFUScottish Rugby Union SRU and Welsh Rugby Union WRU to create a new competition which would bring in the four Irish provinces.