The competition was contested by 32 clubs in a knock-out format where all rounds will be played over two legs and the away goals rule will be used, but in the first three rounds, if the away team won the first leg with an advantage of at least three goals, the second leg will not be played and the club will be automatically qualified to the next round.
2011 | 2011 ATP Challenger Tour | Copa del Rey | Copa Libertadores | 2011 ATP World Tour | 2011 Rugby World Cup | 2011 ITF Women's Circuit | 2011 Tōhoku earthquake and tsunami | 2011 Pan American Games | 2011 Christchurch earthquake | Copa América | 2011 Summer Universiade | 2011 Pacific Games | Miss Universe 2011 | 2011 Copa América | Eurovision Song Contest 2011 | Banco do Brasil | 2011 WTA Tour | 2011 in radio | Canadian federal election, 2011 | 2011 Southeast Asian Games | 2011 in paleontology | 2011 Cricket World Cup | 2011 World Championships in Athletics | 2011 in music | 2011 FIFA Women's World Cup | 2011–12 NCAA football bowl games | 1997 Copa América | Mexico at the 2011 Pan American Games | 2011 Norway attacks |