The Argentinian Football League, officially known as the Primera División, is the top professional football division in Argentina. Established in 1893, it features 28 teams competing annually for the championship title. The league operates on a system of promotion and relegation with the Primera Nacional, the second tier of Argentine football. Matches are typically held on weekends, and the league is known for its passionate fan base and intense rivalries, particularly the famous Superclásico between Boca Juniors and River Plate. The league has produced many talented players who have gone on to achieve international success.