The draws for the qualifying rounds, the play-off round and the group stage were all seeded based on the 2010
UEFA club coefficients. The coefficients were calculated on the basis of a combination of 20% of the value of the respective national association's coefficient for the period from 2005–06 to 2009–10 inclusive and the clubs' individual performances in the UEFA club competitions during the same period. Clubs were ordered by their coefficients and then divided into pots as required. In the draws for the qualifying rounds and the play-off round, the teams were divided evenly into one seeded and one unseeded pot, based on their club coefficients. A seeded team was drawn against an unseeded team, with the order of legs in each tie also being decided randomly. Due to the limited time between matches, the draws for the second and third qualifying rounds took place before the results of the previous round were known. The seeding in each draw was carried out under the assumption that all of the highest-ranked clubs of the previous round were victorious. If a lower-ranked club was victorious, it simply took the place of its defeated opponent in the next round. Moreover, in the third qualifying round and play-off round, champion clubs and non-champion clubs were kept separated. Prior to these draws, UEFA could form "groups" in accordance with the principles set by the Club Competitions Committee, but they were purely for convenience of the draw and did not resemble any real groupings in the sense of the competition, while ensuring that teams from the same association were not drawn against each other. In the draw for the group stage, the 32 teams were split into four pots of eight teams, based on their club coefficients, with the title holder automatically placed into Pot 1. Each group contained one team from each pot, but teams from the same association could not be drawn into the same group. The draw was controlled in order to split teams of the same national association evenly between Groups A-D and Groups E-H, where the two sets of groups alternated between playing on Tuesdays and Wednesdays for each matchday. In the draw for the first knockout round, the eight group winners were seeded, and the eight group runners-up were unseeded. A seeded team was drawn against an unseeded team, with the seeded team hosting the second leg. Teams from the same group or the same association could not be drawn against each other. In the draws for the quarter-finals onwards, there were no seedings, and teams from the same group or the same association could be drawn with each other. ==Qualifying rounds==