Video referee

Late '90s innovation to provide the on-field referee some valuable help in making decisions regarding tries. Largely successfully deployed - to the point at which rugby union thought it was a good plan and claimed it as their own - but crucially not present at every game meaning that a maximum of three games in a Super League round have the facility and the others do not. So not only are games in Australia and Europe played to different rules, games within Europe's top league are played to different rules depending whether the host broadcaster decides to televise your game or not.