Eight teams took part in the qualification tournaments. They were drawn into two groups of four teams, where they played a semifinal and a final or third place match. The winners of the qualification tournaments, played on 20–21 September 2014, qualified for the group stage. The draw took place on 26 June 2014, at 14:00 local time, in Vienna, Austria.[2][3]
The 16 teams were drawn into four groups of four teams, where they played each other twice. The top three teams advanced to the main round. The draw took place on 27 June 2014, at 18:00 local time, in Vienna, Austria.[2][5]
The top three teams of each group from the group stage advanced to the main round. The 12 teams were split into two groups of six teams. The top four placed teams advanced to the knockout stage. The points gained in the group stage against teams that advance, were carried over.
The top four placed teams of each group advance to the knockout stage. In the quarterfinals, the teams will play a home-and away series to determine the four participants of the final four, which then determines the winner.
Quarterfinals
The matches were played on 4–5 April and 11–12 April 2015.[6]