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The Elo rating system is a method for calculating the relative skill levels of players in zero-sum games such as chess. It is named after its creator Arpad Elo, a Hungarian-American physics professor.

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In most North American sports, the phrase games behind or games back is a common way to reflect the gap between a leading team and another team in a sports league, conference, or division.

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Genius Sports is a sports data and technology company that provides data management, video streaming and integrity services to sports leagues, bookmakers and media companies.

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This is a list of records held by wrestlers of professional sumo. Only performances in official tournaments or honbasho are included here. Since 1958 six honbasho have been held every year, giving wrestlers from the modern era more opportunities to accumulate championships and wins. Before this, tournaments were held less frequently; sometimes only once or twice per year.

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Opta Sports, formerly Opta Sportsdata, is a British sports analytics company. Opta provides data for 30 sports in 70 countries, with clients ranging from leagues to broadcasters and betting websites. The company was founded in 1996, and acquired by Perform Group in 2013. In turn, it was acquired by Vista Equity Partners and STATS LLC in 2019.

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A sports rating system is a system that analyzes the results of sports competitions to provide ratings for each team or player. Common systems include polls of expert voters, crowdsourcing non-expert voters, betting markets, and computer systems. Ratings, or power ratings, are numerical representations of competitive strength, often directly comparable so that the game outcome between any two teams can be predicted. Rankings, or power rankings, can be directly provided, or can be derived by sorting each team's ratings and assigning an ordinal rank to each team, so that the highest rated team earns the #1 rank. Rating systems provide an alternative to traditional sports standings which are based on win-loss-tie ratios.

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Stats Perform is a sports data and analytics company formed through the combination of Stats and Perform.