On 7 April 1955, after the merger of Rancagua's cross–town rival: O'Higgins Braden (that was born in 1954 from the merger between Braden F.C. and Instituto O'Higgins) and América de Rancagua, the club was founded thanks to Carlos Dittborn, the president of the Asociación Central de Football, who offered to put the name of the O'Higgins that represents to the subsidiary and also workers of Codelco in the city, under the name of Braden Copper and also in reference to the country's founding father and also supreme director Bernardo O'Higgins, an important character of the Colonial Chile during the 1810s, identified with the city of Rancagua, after some problems between the former rivals América and Braden.