Copa de Oro
The "Copa de Oro" started in 1969 as a friendly tournament between Argentine and foreign clubs. In its first edition, Brazilian Palmeiras, Austrian SK Rapid Wien, Hungarian MTK Budapest and Czechoslovakian Slovan Bratislava participated of the tournament, together with Boca Juniors, Estudiantes, and the Mar del Plata XI team. Later editions had only Brazilian, Uruguayan or Paraguayan teams, with occasional European clubs or national teams, mainly Hungary and Czechoslovakia. Since the 1980s it has only 3 to 5 Argentine teams, which varied from year to year, but included the "Big Five" (Boca Juniors, Independiente, Racing, River Plate and San Lorenzo) and sometimes Estudiantes and Vélez Sársfield. Even though they coexisted for several years, the "Copa Ciudad de Mar del Plata" eventually replaced the Copa de Oro as the most important summer tournament. The "Torneo Pentagonal de Verano" (previously "Copa de Verano"), in which the "Big Five" participate, was the most important tournament and usually took place in Mar del Plata until 2009.