Claim: Eight Argentinian clubs has won Copa Libertadores at least once, with Independiente(headquarters and stadium in the city of Avellaneda in Greater Buenos Aires) on top of the list.
Evidence: 7 Club Atlético Independiente (Spanish pronunciation: [ˈkluβ aˈtletiko indepenˈdjente) is an Argentine professional sports club, which has its headquarters and stadium in the city of Avellaneda in Greater Buenos Aires. 6 4 4 1 1 1 1