Cup. Boca played and won in 1919, in the last edition of the tournament. Copa de Honor Cousenier The Copa de Honor Cousenier was an international football club competition which was played 13 times between representatives of the Argentina and Uruguay associations between 1905 and 1920. The trophy was donated by "E. Cusenier Fils Auné & Cie.", a French liqueur company. The format of the cup consisted in a final between the last champions of Argentine Copa de Honor and Uruguayan Copa de Honor. If necessary, a second match was played. It was similar to Tie Cup but the final games were played at Montevideo instead of Buenos Aires. Boca played and won in 1920, in the last edition of the tournament. Copa Escobar-Gerona The Copa Escobar-Gerona was an official football competition organized by both bodies, the Argentine and Uruguayan football association, being first held in 1941. The Cup was played between the Primera División runners-up of Argentina and Uruguay, with a two match format, played in each country. This competition was played simultaneously with the Copa Aldao. The trophy was donated by Mr. Ramiro Jouan and named after Adrián Escobar and Héctor Gerona, presidents of the Argentine and Uruguayan associations respectively. Boca played and won in 1945 and 1946, in the last editions of the tournament. Copa Libertadores The Copa Libertadores is the highest level of competition in South American club football and has had several different formats over its lifetime. Boca first participated in 1963. The club is the second most successful team in the competition with 6 titles in 1977, 1978, 2000, 2001, 2003 and 2007, only behind Independiente. It is also the team with the most finals played (11) and is in third place in the historical table. Copa Interamericana The Copa Interamericana was an annual club football competition organized by CONCACAF and CONMEBOL from 1969, to 1998. The competition was supposed to be contested between the winners of the North American CONCACAF Champions League and the South American Copa Libertadores tournaments although the participants have varied at times. Boca participated only once, in 1978, as 1977 Copa Libertadores champion and lost against mexican side América. With the traditional format, Boca would have won the title, but the rules stipulated that to win the title more points had to be accumulated than the rival and no more goals, so an extra playoff had to be played,