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.
History of rugby union payment of players, which resulted in the formation of the separate code of rugby league, that the name "rugby union" was used to differentiate the original rugby code. For most of its history, rugby was a strictly amateur football code, and the sport's administrators frequently imposed bans and restrictions on players who they viewed as professional. It was not until 1995 that rugby union was declared an "open" game, and thus professionalism was sanctioned by the code's governing body, World Rugby—then known as the International Rugby Football Board (IRFB). Although rugby football was codified at Rugby School, many rugby playing