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. History The River Plate Rugby Union was established in Buenos Aires on 10 April 1899, being its founding members Buenos Aires, Belgrano, Lomas and Flores from Buenos Aires, and Rosario A.C. from Rosario. The first president of the body was Leslie Corry Smith. That same year, the RPRU organised the first edition of the Buenos Aires' inter-club competition, which inaugural winner team was Lomas. In 1931 the union name was translated into Spanish "Unión de Rugby del Río de la Plata", that remained until 1951 when the union took the definitive "Unión Argentina de Rugby" (UAR). The first trophy awarded to champions was acquired to British goldsmith Elkington & Son through their representatives in Argentina, C.R. Simons & Co., for a price of guinea 100. Built with Greek style, the trophy displayed a scene of a rugby match, with the legends "River Plate Rugby Union Championship" and "1899". The cup was mounted on an ebony base with little silver badges, where the name of the champion would be engraved year-by-year. Most of the money for its acquisition came from the Rosario A.C. members. As a result of a reorganization of the UAR in 1995, the Unión de Rugby de Buenos Aires was created to take over the tournament, being named "Torneo de la URBA". From then on, the UAR focused only on national teams while the URBA took over club competitions. Until 1997 a league system was used, if two or more clubs finished with the same number of points they would