Division 1A leaders Lansdowne will try to get back to winning ways when they visit Old Belvedere tonight, while the other Friday Night Lights tussle sees St. Mary's College entertaining title holders Clontarf at Templeville Road.
These three documents outline the variations in the application of the laws of rugby at the different age grades of the game in Ireland.
Mens Game - Variations (including Senior, Junior 1, Junior 2 and Under 20s)
Women's Game (including all levels of the women's game)
Age Grade Club Rugby (including Age Grade Schools, Age Grade Clubs and Mini)