Which is the greatest leveller in the NRL? 1. The Salary Cap: This mechanism forces successful clubs to release players they have developed to clubs who have been unwilling or unable to develop their own talent, creating a merry-go-round of players between all teams in the competition. 2. The Obstruction Rule: In recent years this rule has been changed so that nobody understands what it means. This enables referees to allow tries to underperforming teams and disallow tries to performing teams without fear of somebody being able to develop a logical coherent argument as to why the referee got the decision wrong, which is no longer possible because nobody understands the rule. 3. The Grading System and the Judiciary: This system enables the NRL to subjectively "grade" foul play to inflict maximum damage on performing teams and minimum damage on underperforming teams. Special features of this mechanism are: A. The "early guilty plea". The Match Review Committee uses this feature to encourage players from performing teams to plead guilty to offences they did not commit. B. "Loading". This enables the judiciary to hand down longer suspensions to the players from performing teams who are targetted by the Match Review Committee.