The competition was played by 64 clubs in a knock-out format where all rounds were played over two legs and the away goals rule was used, but in the first two rounds if the away team won the first leg with an advantage of at least two goals, the second leg was not played and the club automatically qualified to the next round.
2004 | 2004 in music | 2004 Summer Olympics | Copa del Rey | United States presidential election, 2004 | Copa Libertadores | Canadian federal election, 2004 | 2004 in film | Battlestar Galactica (2004 TV series) | Copa América | 2004 in baseball | 2004 ATP Tour | 2004 IAAF World Indoor Championships | United States Senate elections, 2004 | United States House of Representatives elections, 2004 | 2011 Copa América | 2004 in television | Banco do Brasil | Eurovision Song Contest 2004 | Australian federal election, 2004 | 2004 Indian Ocean earthquake and tsunami | Crash (2004 film) | Alberta general election, 2004 | 2004 in sports | 2004 World Series | 2004–05 UEFA Champions League | 1997 Copa América | 2004–05 UEFA Cup | 1999 Copa América | Miss Brasil |