IRB World Rankings

The IRB World Rankings is a ranking system for men's national teams in rugby union. The teams of the member nations of IRB (International Rugby Board), governing body, are ranked based on their game results with the most successful teams being ranked highest. A point system is used, with points being awarded based on the results of IRB-recognized international matches. Under the system, rankings are based on a team's performance, with more recent results and more significant matches being more heavily weighted to help reflect the current competitive state of a team. The ranking system was introduced after the 2003 Rugby World Cup, with the first edition of the new series of rankings issued on October 20, 2003.
See more at Wikipedia.org...