Copa Sudamericana

The CONMEBOL Sudamericana, also known as the Copa Sudamericana (Spanish pronunciation: [ˈkopa suðameɾiˈkana]; Portuguese: Copa Sul-Americana [ˈkɔpɐ ˈsulɐmeɾiˈkɐnɐ]), is an annual international club football competition organized by CONMEBOL, the governing body of football in South America, since 2002. It is the second-most prestigious club competition in South American football. CONCACAF clubs were invited between 2004 and 2008. The CONMEBOL Sudamericana began in 2002, replacing the separate competitions Copa Merconorte and Copa Mercosur (that had replaced Copa CONMEBOL) by a single competition. Since its introduction, the competition has been a pure elimination tournament with the number of rounds and teams varying from year to year.

The CONMEBOL Sudamericana is considered a merger of defunct tournaments such as the Copa CONMEBOL, Copa Mercosur and Copa Merconorte. The winner of the Copa Sudamericana becomes eligible to play in the Recopa Sudamericana, the South American supercup. They gain entry to the next edition of the Copa Libertadores, South America's premier club competition, and also contest the UEFA–CONMEBOL Club Challenge, a friendly cup against the winners of the UEFA Europa League. Previously they also competed in the J.League Cup / Copa Sudamericana Championship against the winner of the Japanese League Cup.

The reigning champion of the competition is Ecuadorian club LDU Quito, who defeated Brazilian club Fortaleza in the most recent final.

Argentine clubs have accumulated the most victories with nine while containing the largest number of winning teams, with seven clubs. The cup has been won by 17 clubs. Argentine clubs Boca Juniors and Independiente as well as Brazilian club Athletico Paranaense and Ecuadorian clubs Independiente del Valle and LDU Quito are the most successful clubs in the competition's history, having won the tournament twice, with Boca Juniors being the only one to achieve it back-to-back, in 2004 and 2005.