where Boca lost. Supercopa Sudamericana The Supercopa Libertadores, also known as the Supercopa Sudamericana, was a football club competition contested annually between 1988 and 1997 by the past winners of the Copa Libertadores. The competition was discontinued to make way for the Copa Mercosur and Copa Merconorte in 1998. Boca participated in all the editions, winning the 1989 edition and being runner-up in 1994. Recopa Sudamericana The Recopa Sudamericana is an annual international club football competition organized by CONMEBOL since 1988. It is a match-up between the champions of the previous year's Copa Libertadores and the Copa Sudamericana, South America's premier club competitions. The competition has had several formats over its lifetime. Initially, the champions of the Copa Libertadores and Supercopa Libertadores contested it. In 1998, the Supercopa Libertadores was discontinued and the Recopa went into a hiatus. The competition has been disputed with either a presently-used two-legged series or a single match-up at a neutral venue. Boca is the most successful club in the cup history, having won the tournament four times, in 1990, 2005, 2006 and 2008. The club also lost in the 2004 edition. Copa Master de Supercopa The Copa Master de Supercopa was a football competition contested by clubs that had previously won the Supercopa Libertadores. It was organized by CONMEBOL and only played in 1992 and 1995. The format of the tournament was different in both editions. Boca only played in the 1992 edition, tournament that won. Copa de Oro The Copa de Oro was a football competition cup winners' cup competition contested on 3 occasions by the most recent winners of all CONMEBOL continental competitions. These included champions of the Copa Libertadores, Supercopa Sudamericana, Copa CONMEBOL, Copa Master de Supercopa and Copa Master de CONMEBOL. Boca only played in the 1993 edition, as 1992 Copa Master de Supercopa champion, and won the title, being the only club from Argentina to win the competition. Copa Iberoamericana The Copa Iberoamericana was an international official football competition. It was created to face the champions of the Copa de Oro and the Copa del Rey, because of an agreement signed between CONMEBOL and the Royal Spanish Football Federation. It was disputed only once between Boca Juniors and Real Madrid in 1994, with victory to the Spanish club. After two decades, in 2015 CONMEBOL recognised the Copa Iberoamericana as an official tournament. Copa Mercosur The Copa Mercosur was a