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Bracketology is the process of predicting the field of
college basketball College basketball is basketball that is played by teams of Student athlete, student-athletes at universities and colleges. In the Higher education in the United States, United States, colleges and universities are governed by collegiate athle ...
participants in the NCAA men's and women's basketball tournaments, named as such because it is commonly used to fill in tournament brackets for the postseason. It incorporates some method of predicting the metrics the NCAA Selection Committee will use (such as
rating percentage index The rating percentage index, commonly known as the RPI, is a quantity used to rank sports teams based upon a team's wins and losses and its strength of schedule. It is one of the sports rating systems by which NCAA basketball, baseball, softbal ...
through the 2018 tournament, and the NCAA Evaluation Tool ETsince 2019) in order to determine at-large (non-conference winning) teams to complete the field of 68 teams, and, to
seed In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a ''testa''. More generally, the term "seed" means anything that can be Sowing, sown, which may include seed and husk or tuber. Seeds ...
the field by ranking all teams from first through sixty-eighth. Bracketology also encompasses the process of predicting the winners of each of the brackets. In recent years the concept of bracketology has been applied to areas other than basketball.


Background

Joe Lunardi is credited with inventing the term ''bracketology''. Lunardi had been editor and owner of the ''Blue Ribbon College Basketball Yearbook'', a preseason guide roughly 400 pages long. In 1995, ''Blue Ribbon'' added an 80-page postseason supplement which was released the night the brackets were announced. So that the release could be timely, Lunardi began predicting the selection committee's bracket. On February 25, 1996, ''
The Philadelphia Inquirer ''The Philadelphia Inquirer'', often referred to simply as ''The Inquirer'', is a daily newspaper headquartered in Philadelphia, Pennsylvania. Founded on June 1, 1829, ''The Philadelphia Inquirer'' is the third-longest continuously operating da ...
'' referred to Lunardi as a ''bracketologist'', which is the first known instance the term was applied to a college basketball expert. While Lunardi did not recall using the term before its use in the article, ''Inquirer'' writer Mike Jensen credits its origins to Lunardi. Lunardi soon started the website Bracketology.net, and
ESPN ESPN (an initialism of their original name, which was the Entertainment and Sports Programming Network) is an American international basic cable sports channel owned by the Walt Disney Company (80% and operational control) and Hearst Commu ...
began running his predictions in exchange for a link to his website. By 2002, Lunardi had his own Bracketology page with ESPN. He also teaches an online course at
Saint Joseph's University Saint Joseph's University (SJU or St. Joe's) is a Private university, private Jesuits, Jesuit university in Philadelphia, Lower Merion Township, Pennsylvania, and Lancaster, Pennsylvania. The university was founded by the Jesuits, Society of J ...
titled "Fundamentals of Bracketology".


Predicting participants

Using the NCAA basketball tournament selection process, the NET, and the seeding and balancing process, a "bracketologist" places teams in the tournament in the various regions (most commonly East, West, Midwest, and South however sometimes the region names are changed to reflect the host cities). Some bracketologists go as far as placing teams in which "pods" they will play in the first and second rounds. Generally, the lists also show the last four teams in and the first four teams out. However, these brackets change daily as conference tournaments continue and teams automatically qualify for the tournament. A bracketologist's credibility is judged on how many teams they predict correctly being in the tournament and the average difference between the bracketologist's projected seed and the actual seed assigned by the NCAA Selection Committee. The difference between projected matchups and the differences between the "pods" selected in the first and second rounds are less important. Typically, bracketologists measure their success by comparing their projected seed lists to other bracketologists, as can be seen on the bracket matrix.


Predicting winners

Various methods are used to predict the winners in a bracket. While some use math and statistics, others make selections based on team mascots or colors. President
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
famously made bracket predictions. After entering office, he presented his projected winners annually on ESPN in a segment called Barack-etology. However, in 2015 he was bested by his former political rival and 2012 presidential nominee,
Mitt Romney Willard Mitt Romney (born March 12, 1947) is an American businessman and retired politician. He served as a United States Senate, United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007 ...
, who ranked in the top 0.1 percent of entrants in
ESPN ESPN (an initialism of their original name, which was the Entertainment and Sports Programming Network) is an American international basic cable sports channel owned by the Walt Disney Company (80% and operational control) and Hearst Commu ...
's 2015 Tournament Challenge. Romney correctly predicted six of the "Elite Eight" teams, all of the "Final Four" teams, both teams in the championship game matchup, and that
Duke Duke is a male title either of a monarch ruling over a duchy, or of a member of Royal family, royalty, or nobility. As rulers, dukes are ranked below emperors, kings, grand princes, grand dukes, and above sovereign princes. As royalty or nobi ...
would win the title.


Non-basketball applications

Bracketology as a discipline has spread beyond a focus on basketball, into other sports, as well as pop culture, history, nature, and other topics where a loose application of
binary opposition A binary opposition (also binary system) is a pair of related terms or concepts that are opposite in meaning. Binary opposition is the system of language and/or thought by which two theoretical opposites are strictly defined and set off against one ...
may be profitable for study or enjoyment, albeit without the label of "bracketology" itself. This spread has been helped along by literary agent and writer Mark Reiter and sports journalist Richard Sandomir, who have edited two books on bracketology as applied to the world around them, most recently '' The Final Four of Everything'',The Final Four of Everything , Book by Mark Reiter, Richard Sandomir - Simon & Schuster
/ref> which was published by
Simon & Schuster Simon & Schuster LLC (, ) is an American publishing house owned by Kohlberg Kravis Roberts since 2023. It was founded in New York City in 1924, by Richard L. Simon and M. Lincoln Schuster. Along with Penguin Random House, Hachette Book Group US ...
in May 2009.


References


External links


Bracketology article in New York Times

ESPN: Joe Lunardi's Men's Bracketology

ESPN: Charlie Creme's Women's Bracketology



DRatings: Donchess NCAA/NIT Bracketology

The Bracket Matrix

Publisher website for The Final Four of Everything by Mark Reiter and Richard Sandomir
{{NCAA Division I men's basketball tournament navbox NCAA Division I men's basketball tournament