The URBA Top 12 (formerly "Torneo de la URBA") is an Argentine rugby union club competition organised by the Buenos Aires Rugby Union (URBA). It is the top division of the Argentine rugby league system. Created on 10 April 1899 by the "River Plate Rugby Union" (current Argentine Rugby Union – UAR), the Top 13 is the oldest rugby competition in South America and one of the oldest club competitions in the world. Top 12 is one of the country's two main club competitions, along with Torneo del Interior, where clubs from the rest of the Provinces of Argentina take part. The championship runs from March to October. Despite being from the city of Rosario in Santa Fe Province, Atlético del Rosario has taken part of Top 12 as founding member of the UAR. The other clubs from Rosario compete in tournaments organised by the Rosario governing body. From Wikipedia
