Comparison of rugby league and rugby union 1 in league. A penalty goal is worth 3 points in union and 2 points in league. Use of a penalty box (or "sin bin") was introduced by rugby league in 1980. Rugby union had been experimenting with the same concept since 1979, although it was not formally sanctioned until 2001. Video referee technology was first used for rugby league in 1996 and for rugby union in 2001. In rugby league the ball may be thrown or knocked out of play deliberately, while in union those are penalty offences. Kicking the ball out of play is legal in both codes.
Rugby league Rugby league Rugby league football is a full-contact sport played by two teams of thirteen players on a rectangular field. One of the two codes of rugby, it originated in Northern England in 1895 as a split from the Rugby Football Union over the issue of payments to players. Its rules progressively changed with the aim of producing a faster, more entertaining game for spectators. In rugby league, points are scored by carrying the ball and touching it to the ground beyond the opposing team's goal line; this is called a "try", and is the primary method of scoring. The