This year is the 50th birthday of South American football 's Copa Libertadores . The competition has been dominated by Argentine and Brazilian teams . Liberdatores tends to be less predictable than Europe 's Champions League . Bellos says these factors can combine to make the Libertadores less predictable than the Champions League , as can the fact that clubs regularly lose their best players to Europe , meaning their squads can change drastically from one season to the next . This year 's semi finals featured teams from Brazil , Argentina and Uruguay .
This year is the 50th birthday of South American football 's Copa Libertadores . The competition has been dominated by Argentine and Brazilian teams . Liberdatores tends to be less predictable than Europe 's Champions League . This year 's semi finals featured teams from Brazil , Argentina and Uruguay .