If tied on points, tiebreakers are applied in the following order:#Greater number of points obtained in the group matches between the teams concerned#Goal difference resulting from the group matches between the teams concerned#Greater number of goals scored in the group matches between the teams concerned (away goals do not apply)#Goal difference in all the group matches#Greater number of goals scored in all the group matches#Penalty shoot-out if only two teams are involved and they are both on the field of play#Fewer score calculated according to the number of yellow and red cards received in the group matches (1 point for a single yellow card, 3 points for a red card as a consequence of two yellow cards, 3 points for a direct red card, 4 points for a yellow card followed by a direct red card)#Drawing of lots==Groups==The matchdays were 26–27 February, 12–13 March, 2–3 April, 9–10 April, 23–24 April, and 30 April–1 May 2013.