Clubs initially compete in eight groups (sections) with the group winners advancing to a knockout competition.

In total and in the first round, 70 teams will compete in 9 different groups.

Seventy-two open teams are competing in four groups, with four to qualify from each for playoffs next week.

In the preliminary stage, athletes competed in four groups of three.

Clubs initially compete in four groups, with group winners advancing to a knockout semi-final stage.

The remaining twenty-four teams competed between 21-24 April 2011 in six groups of four for the eleven spots left.

The revamped European Cup for 2009 will involved six teams competing in two groups of three.

In the preliminary stage, athletes compete in eight groups of three.

The revamped competition involved six teams competing in two groups of three.

It is competed amongst 36 teams, in two different groups (A and B).