Elo rating system - WikipediaArpad Elo, the inventor of the Elo rating system The Elo[a] rating system is a method for calculating the relative skill levels of players in zero-sum games such as chess or esports. It is named after its creator Arpad Elo, a Hungarian-American chess master and physics professor. The Elo system was invented as an improved chess-rating system over the previously used Harkness system,[1] but is also
