Uses the Elo rating system to maintain a ranking of competitors. In my case, used to rank table tennis players at my workplace.
This is a GAE app. The user system is piggy backed off the Google authentication API provided. To register, a competitor needs a google account.
- undo a result by winding back all adjustments and replaying the subsequent results to readjust ranking
- feature which estimates the probable ranking changes if a player defeats another player
- docking of points if no matches played in set time period (+ points awarded for playing high number of matches ?? top 20% of playing frequency)