Format
The competition was contested by 65 clubs in a knock-out format where all rounds were played over two legs and the away goals rule was used, with the exception of the preliminary match, which was played in a single match, and 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.
Read more about this topic: 2003 Copa Do Brasil