In Mexican football, the Big Four traditionally refers to the most successful and popular clubs: América, Guadalajara (Chivas), Cruz Azul, and Pumas, who collectively hold 45 Liga MX titles. However, this designation has been debated in the 2020s as Toluca has matched or surpassed some of these clubs in titles, sparking arguments for an expanded "Big Five". The most intense rivalry is El Súper Clásico between América and Chivas, a national derby that gained notoriety after a 7-2 América win and violent brawls in 1983 and 1986. The Clásico Capitalino pits América against Pumas, representing a clash between the wealthy establishment (backed by Televisa) and the intellectual middle-class of UNAM, with their first meeting occurring on 1 July 1962. Finally, the Clásico Joven between América and Cruz Azul highlights social class differences, with Cruz Azul symbolizing the working class (dubbed "Los Albañiles") despite being founded in Jasso, Hidalgo. These fierce rivalries are considered among the most important matches in the world, with El Súper Clásico even making FourFourTwo's list of the 50 biggest derbies.