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  2. Chess rating system - Wikipedia

    en.wikipedia.org/wiki/Chess_rating_system

    Players' new ratings centre on the average rating of entrants to their competition: then if having achieved better than a net draw set of result, minus the number of percentage points it is over 50% (e.g. a 12–4 or 24–8 wins-to-losses result is, as ever, noted as a 75% tournament outcome) – if having achieved worse than this then the ...

  3. Sports rating system - Wikipedia

    en.wikipedia.org/wiki/Sports_rating_system

    Beyond points or wins, some system designers choose to include more granular information about the game. Examples include time of possession of the ball, individual statistics, and lead changes. Data about weather, injuries, or "throw-away" games near season's end may affect game outcomes but are difficult to model.

  4. Elo rating system - Wikipedia

    en.wikipedia.org/wiki/Elo_rating_system

    A player whose rating is 100 points greater than their opponent's is expected to score 64%; if the difference is 200 points, then the expected score for the stronger player is 76%. [2] A player's Elo rating is a number that may change depending on the outcome of rated games played. After every game, the winning player takes points from the ...

  5. United States soccer league system - Wikipedia

    en.wikipedia.org/wiki/United_States_soccer...

    No professional league in any of the major pro sports leagues in the U.S. or Canada uses a system of promotion and relegation. [1] The country's governing body for the sport, the United States Soccer Federation (also known as the USSF or U.S. Soccer), oversees the league system and is responsible for sanctioning professional leagues.

  6. Official World Golf Ranking - Wikipedia

    en.wikipedia.org/wiki/Official_World_Golf_Ranking

    The initiative for the creation of the Official World Golf Ranking came from the Championship Committee of the Royal and Ancient Golf Club of St Andrews, which found in the 1980s that its system of issuing invitations to The Open Championship on a tour by tour basis was omitting an increasing number of top players because more of them were dividing their time between tours, and from preeminent ...

  7. Code of Points (gymnastics) - Wikipedia

    en.wikipedia.org/wiki/Code_of_Points_(gymnastics)

    A gymnast earned bonus points by performing difficult skills alone or in combination. Required elements : Routine composition was decided by the gymnast and his or her coaches, however, on every apparatus except vault there was a list of required elements (similar to the EGR in the new Code ) that had to be performed during the routine.

  8. Professional sports league organization - Wikipedia

    en.wikipedia.org/wiki/Professional_sports_league...

    Professional sports leagues are organized in numerous ways. The two most significant types are one that developed in Europe, characterized by a tiered structure using promotion and relegation in order to determine participation in a hierarchy of leagues or divisions, and a North American originated model characterized by its use of franchises, closed memberships, and minor leagues.

  9. Skill-based matchmaking - Wikipedia

    en.wikipedia.org/wiki/Skill-based_matchmaking

    The term skill-based matchmaking first appeared in a 2008 interview with game designer John Carmack in which he emphasized its importance in Quake Live (2010). Upon setting up an account with id Software, the game will ask the player for their skill level and judge accordingly depending on their performance from that point forward. [5]