was founded in 1908 in Belo Horizonte, Minas Gerais; América emerged four years later. The first match between the two clubs happened on 13 November 1913, and finished 1–1. The two clubs, together with Yale, took part in the Taça Bueno Brandão in 1914. It was the first competition organised in the state, and was won by Atlético. In 1915, Atlético also won the inaugural edition of the Campeonato Mineiro, the state league of Minas Gerais. The competition was then organised by the Liga Mineira de Sports Athléticos, which would later become the Federação Mineira de Futebol. Despite Atlético's initial success, América was the dominant force in the first decades of the encounter. It won the following ten editions of the Campeonato Mineiro, and Atlético only won the state league again in 1926. The matches between the two clubs were known in their early days as the Clássico das Multidões as they were the most popular clubs in the state. Atlético Mineiro was founded by liberal, upper-class students, but from an early age it opened its doors to players from every social class, nationality or ethnicity, which earned it a "people's club" status in Belo Horizonte and in the state. América, meanwhile, had a reputation as an elitist club. In the 1930s, Atlético pioneered professionalization of football in Minas Gerais, whereas América resisted against it. América suffered a setback as a result of its internal disagreements regarding professionalism. A controversial Campeonato Mineiro final happened in 1948, when América won 3–1 with what was known as the "gol do guarda". The match was disputed at América's Estádio da Alamaeda, and Atlético could draw to be crowned champion. When América was winning 2–1, forward Murilinho kicked the ball, after which it bounced on a municipal officer and entered the goal. The goal was confirmed by English referee John Barrick, and América was champion of the competition. With América's setback in the 1930s and Cruzeiro's rise to prominence since the 1940s, the derby lost some importance in the state to the Clássico Mineiro in this decade. The rivalry between Atlético and Cruzeiro eventually became the biggest derby in Minas Gerais in the 1960s, after the construction of the Mineirão.
Records
Biggest wins:
*For América: América 7–2 Atlético Mineiro, ;
*For Atlético Mineiro: Atlético Mineiro 6–1 América.