The Liga Uruguaya de Básquetbol (also known as LUB) is the most important basketball league in Uruguay. It is organized by the Uruguayan Basketball Federation. The Uruguayan Basketball League began to compete in 2003. Before that date, the basketball championships were only metropolitan and no competitions brought together all the clubs in the country. Until the Liga Uruguaya de Básquetbol was created, the capital clubs participated in the Uruguayan Federal Tournament, while the clubs of the rest of the country competed in regional tournaments. The Uruguayan Federal Tournament was founded in 1915, making it amongst the oldest on the continent.
The first tournament had a dramatic end with a double in the last second that brought the Uruguayan Title to Defensor Sporting, repeated in the 2009-10 season. Other champions were Salto Uruguay in 2004, Trouville in 2005-06, Malvín in 2006-07 and 2010–11, Biguá in 2007-08 and 2008–09, Hebraica Macabi in 2011-12 and Aguada in 2012-13. There are only two teams that participated in all seasons; they are: Defensor Sporting and Trouville.
The LUB 2012-13 will be played in three stages: Torneo Clasificatorio (Qualifying Tournament), Súper Liga (Super League) and play-off.
In the Qualifying Tournament, teams will play in three separate leagues (Capital, Coast and South) according to their origin. In the Capital League the clubs will play each other twice, home and away, and the first eight of the table will play the Super League, while the last three will be relegated to the Second Division, to participate in the 2013 Metropolitano tournament. Elsewhere both the Coastal League and South Central League play their separate tournaments where the first two qualify for the Super League.
The Super League will be contested by eight teams from the Capital League, two from the South League and two from the Coast League. They will play divided into two groups of six teams each group, two legs home and away. Group A will comprise: 1st, 3rd, 5th and 7th of Capital League, 1st of South League and 2nd of Coast League. While Group B, will consist of 2nd, 4th, 6th and 8th of Capital League, 2nd of South League and 1st of Coast League. The four best placed teams from each group will qualify for the play-offs, using a system of a double table. The first table will consider only the points earned in the second phase of the Super League and the top four will advance to the play-offs. The remaining positions will be filled by clubs in Montevideo with the best score after adding half of the total in the Qualifying Tournament and the total obtained in the Super League. This system was established because teams outside the capital will only have to play a maximum of ten games to reach the Super League, while those in Montevideo will have played about thirty games.
Finally, teams will compete in the play-offs, games being the best of five. The first stage is the quarterfinals. The qualifiers will play: A) 1st A vs. 4th B, B) 2nd A vs. 3rd B, C) 1st B vs. 4th A and D) 2nd B vs. 3rd A. The semifinal pairings will be: A) Winner vs. D) Winner and B) Winner vs. C) Winner. The winners of these matches will play the final, determining the winner as champion of LUB 2013-14.
Defensor Sporting and Trouville are the teams with the most participation, having competed in every championship of LUB. The teams compete for the Uruguayan Basketball League divided into zones (Capital Zone, South Zone and North Coast Zone) looking to qualify for the Super League to be crowned Uruguayan Champions.
Notes: All statistics are only for the Uruguayan Basketball League (Liga Uruguaya de Básquetbol) organized by the Uruguayan Basketball Federation (Federación Uruguaya de Basketball), federal tournaments are not included. The "stadium" column reflects the stadium where the team more times local officiates in their matches, but does not indicate that the equipment in question is owner.