Format
The tournament is played in two-legged knockout stages. In the first two rounds the away team automatically goes through to the next round if they beat the home team by a 2-goal difference or more in the first leg.
The away goals rule is used in the Copa do Brasil, which is an unusual feature when compared to other South American competitions. For example, the Copa Libertadores did not adopt this rule until 2005.
Copa do Brasil is an opportunity for teams from smaller states to play against the big teams and episodes of giant-killing have happened at a regular rate throughout the competition history.
An unusual fact about the cup is that it is impossible for a team to win it two times in a row, as the defending champions play in the next year's Copa Libertadores, making impossible for teams to play Copa Libertadores and Copa do Brasil in the same year due to lack of calendar.
Read more about this topic: Copa Do Brasil