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Jeff Sagarin is an American sports statistician known for his development of a method for ranking and rating sports teams in a variety of sports. His Sagarin Ratings have been a regular feature in the USA Today sports section from 1985 to 2023, have been used by the NCAA Tournament Selection Committee to help determine the participants in the NCAA Men's Division I Basketball Championship tournament since 1984, and were part of the college football Bowl Championship Series throughout its history from 1998 to 2014.
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.
The BCS National Championship Game, or BCS National Championship, was a postseason college football bowl game, used to determine a national champion of the NCAA Division I Football Bowl Subdivision (FBS), first played in the 1998 college football season as one of four designated bowl games, and beginning in the 2006 season as a standalone event rotated among the host sites of the aforementioned bowls.
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In American college football, the 2007 BCS computer rankings are a part of the Bowl Championship Series (BCS) formula that determines who plays in the BCS National Championship Game as well as several other bowl games. Each computer system was developed using different methods which attempts to rank the teams' performance. For 2007, the highest and lowest rankings for a team are dropped and the remaining four rankings are summed. A team ranked #1 by a computer system is given 25 points, #2 is given 24 points and so forth. The summed values are then divided by 100. The values are then ranked by percentage. This percentage ranking is then averaged with the Coaches Poll and Harris Poll average rankings, each receiving equal weight, and the results become the BCS Rankings.
The Bowl Championship Series (BCS) was a selection system used between 1998 and 2013 that was designed, through polls and computer statistics, to determine a No. 1 and No. 2 ranked team in the NCAA Division I Football Bowl Subdivision (FBS). After the final polls, the two top teams were chosen to play in the BCS National Championship Game which determined the BCS national champion team, but not the champion team for independent voting systems. This format was intended to be "bowl-centered" rather than a traditional playoff system, since numerous FBS Conferences had expressed their unwillingness to participate in a play-off system. However, due to the unique and often esoteric nature of the BCS format, there had been controversy as to which two teams should play for the national championship and which teams should play in the four other BCS bowl games. In this selection process, the BCS was often criticized for conference favoritism, its inequality of access for teams in non-Automatic Qualifying (non-AQ) Conferences, and perceived monopolistic, "profit-centered" motives. In terms of this last concern, Congress explored the possibility on more than one occasion of holding hearings to determine the legality of the BCS under the terms of the Sherman Anti-Trust Act, and the United States Justice Department also periodically announced interest in investigating the BCS for similar reasons.
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A national championship in the highest level of college football in the United States, currently the NCAA Division I Football Bowl Subdivision (FBS), is a designation awarded annually by various organizations to their selection of the best college football team. Division I FBS football is the only National Collegiate Athletic Association (NCAA) sport for which the NCAA does not sanction a yearly championship event. As such, it is sometimes referred to as a "mythical national championship".
David Rothman was an American statistician, public policy advisor, and the creator of a computerized college football ranking system.
The College Football Playoff (CFP) is an annual postseason knockout invitational tournament to determine a national champion for the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision (FBS), the highest level of college football competition in the United States. It culminates in the College Football Playoff National Championship game. The inaugural tournament was held at the end of the 2014 NCAA Division I FBS football season under a four-team format. The CFP expands to include twelve teams for the 2024 season.
The Billingsley Report is a college football rating system developed in the late 1960s to determine a national champion. Billingsley has actively rated college football teams on a current basis since 1970. Beginning in 1999, Billingsley's ratings were included as one of seven mathematical formulas included in the Bowl Championship Series (BCS) rankings.
The Colley Matrix is a computer-generated sports rating system designed by Dr. Wesley Colley. It is one of more than 40 polls, rankings, and formulas recognized by the NCAA in its list of national champion selectors in college football.
References
- ↑ "The Only Original and Unaltered* BCS Computer Rankings..." Andersonsports.com. 2006-12-03. Archived from the original on 10 December 2006. Retrieved 2006-12-12.
- ↑ Richard Billingsley (2002-07-21). "IN SEARCH OF A NATIONAL CHAMPION". cfrc.com. Archived from the original on 2006-07-20. Retrieved 2006-12-12.
- ↑ Wes Colley (2006-12-12). "Advantages in this Method". ColleyRankings.com. Archived from the original on 6 December 2006. Retrieved 2006-12-12.