The election of new club president Osvaldo Domínguez Dibb in 1975 is a key part in Olimpia's history. The new president hired coach Luis Cubilla, who in 1979 led Olimpia to its first international cup win when the club defeated Boca Juniors of Argentina in the Copa Libertadores final. In the first leg game played in Asunción Olimpia won 2–0. That result allowed Olimpia to play their effective defensive scheme in the famous La Bombonera stadium in the second leg, ending the match in a 0–0 draw that gave the Paraguayan side its first Copa Libertadores.