The tournament was originally founded as the Chile International Championships [2] in 1930 as a combined men's and women's tennis event.

From 1976 until 1981 this event was known as the Chilean International Open and was an ILTF Grand Prix Circuit affiliated men's tennis tournament.

When the ATP resolved to keep these tournaments in Latin America, brothers Jaime and Álvaro Fillol decided to buy the organizing rights to hold one of these events in Chile.

[4] In the pre-open era champions included Pancho Segura, Budge Patty, Jaroslav Drobný and Luis Ayala.

In the open era many top-ten players participated in this tournament, including Mats Wilander, Jim Courier, Jiří Novák, Marcelo Ríos, Carlos Moyá, Gustavo Kuerten, Àlex Corretja, Tommy Haas, Magnus Norman, Sergi Bruguera, Guillermo Coria, David Nalbandian, Gastón Gaudio, Fernando González, Tommy Robredo, Nicolás Lapentti, Álbert Costa, Alberto Berasategui, Emilio Sánchez, Guillermo Cañas, Mariano Puerta, Nicolás Massú, David Ferrer, Fernando Verdasco, Juan Mónaco, Rafael Nadal, and Félix Mantilla.