100 Sexiest Footballers' Wives

During the second half of 20th century, the rules changed further. In 1966, rugby league officials borrowed the American football concept of downs: a team could retain possession of the ball for no more than four tackles. The maximum number of tackles was later increased to six (in 1971), and in rugby league this became known as the six tackle rule.
With the advent of full-time professionals in the early 1990s, and the consequent speeding up of the game, the five metre off-side distance between the two teams became 10 metres, and the replacement rule was superseded by various interchange rules, among other changes.
The laws of rugby union also changed significantly during the 20th century. In particular, goals from marks were abolished, kicks directly into touch from outside the 22 metre line were penalised, new laws were put in place to determine who had possession following an inconclusive ruck or maul, and the lifting of players in line-outs was legalised.
In 1995, rugby union became an "open" game, that is one which allowed professional players. Although the original dispute between the two codes has now disappeared — and despite the fact that officials from both forms of rugby football have sometimes mentioned the possibility of re-unification — the rules of both codes and their culture have diverged to such an extent that such an event is unlikely in the foreseeable future.