The Cycling Elo rating system is an equivalent to the chess ELO rating system. The main difference is the chess ELO rating is based on a two player game, while this rating system is based on a multiplayer game, which is in essence what cycling is. The method used for the Cycling Elo rating is loosely based on TrueSkill, developed by Microsoft for multiplayer games. TrueSkill uses a Bayesian approach to estimates a player’s skill, which is represented as a normal distribution characterized with a mean value and variance around it.