Sports Ladder allows you to create and maintain a simple tournament ladder / league system within your Joomla! website.
The rules of the ladder operate so that if a player beats a higher ranked opponent then they will advance to their opponents rung in the ladder.
As of Version 1.1.0 you can now create different 'types' of Ladders which operate in either standard mode (as described above) or by using a points based system which can be configured to suit your own personal needs.
The admin back end allows site owners to create ladders, add players and report games.
The front end allows you to visualise the ladders and view a players game history.
Individual sports such as squash and badminton are ideal for this sort of league system but the principle could be applied to team games and it doesn't necessarily need need to be sport related either - you could use a ladder to manage a gaming tournament!