A list of the clubs left in the fight reads like a "Who's Who" of the history of South American football.
Brazilian and Argentine clubs ruled the group stage, but when the tournament resumes after the World Cup, expect one nation to have the upper hand.
Corinthians donated $3,000 to hotel staffers in Venezuela before their Copa Libertadores match because of the economic crisis in the country.
Clubs from Brazil and Argentina could account for up to 12 of the representatives in the knockout rounds of the Copa Libertadores.
The Copa Libertadores has reached a fascinating stage and it's a make-or-break week, with Boca Juniors' hopes in the balance.
The 17-year-old Paulinho has been picking up invaluable first-team experience with Vasco. In Germany he may well have to be more patient.