The NCAA Division I Men’s Basketball Tournament, also known and branded as NCAA March Madness, is a single-elimination championship played each spring at the USA, now featuring 64 college basketball teams from the Division I level of the National Collegiate Athletic Association (NCAA), to determine the national championship. The tournament has been Ohio State coach Harold Olsen’s Notion, and was created in 1939 by the National Association of Basketball Coaches.  Played during March, it has become one of the most famous annual sporting events in the USA. 
The championship teams include champions from 32 Division I conferences (which get automatic bids), and 36 teams which are awarded at-large berths. All these”at-large” teams are chosen by an NCAA selection committee, then declared in a nationally televised event on the Sunday preceding the”First Four” play-in matches, currently held in Dayton, Ohio, and dubbed Selection Sunday. The 68 teams are broken up into four regions and coordinated into a single-elimination”bracket”, which pre-determines, when a team wins a game, which team it will face . Each group is”seeded”, or ranked, within its area from 1 to 16. The championship happens during the course of three weekends, in neutral sites across the United States. Teams, seeded by position, proceed through a single-game removal bracket beginning with a”first four” comprising 8 low-seeded teams playing 4 matches to get a position in the initial round the Tuesday and Wednesday prior to the first round begins, a primary round comprising 64 teams playing 32 games within the span of a week, the”Sweet Sixteen” and”Elite Eight” rounds another weekend and week, respectively– and — for the last weekend of the championship — the”Final Four” round. The Final Four is played during the first weekend of April. These four groups, one from every area (East, South, Midwest, and West), compete at a preselected place for the national championship.
The championship has been at least partially televised since 1969.  Currently, the matches are broadcast by CBS, TBS, TNT, and truTV beneath the trade-name NCAA March Madness. Since 2011, all games can be found for viewing and internationally. As television coverage has increased, so also has the championship’s popularity. Currently, millions of Americans fill out a bracket, attempting to correctly predict the outcome of 63 matches of the tournament (not including the First Four matches ).
With 11 titles, UCLA gets the record for the many NCAA Men’s Division I Basketball Championships; John Wooden coached UCLA to 10 of its 11 names. The University of Kentucky (UK) is next, with eight national titles. The University of North Carolina is third, with six titles, and Indiana University and Duke University are tied for fourth with five national titles. The University of Connecticut is with four national titles. The University of Kansas (KU) & Villanova are tied for 7th with three national titles. Since 1985, once the tournament expanded to 64 teams, Duke has won five championships; North Carolina and UConn have won four; Kentucky & Villanova have three; Kansas & Florida have 2; and Arizona, Arkansas, Indiana, Maryland, Michigan, Michigan State, Louisville[a], Syracuse, UCLA, UNLV, and Virginia have one.
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