the switch to odd years. The change was made because the senior teams of many nations often chose to promote players from their under-21s team as their own qualification campaign intensified. Staggering the tournaments allowed players more time to develop in the under-21 team rather than get promoted too early and end up becoming reserves for the seniors.

The 2007 competition actually began before the 2006 finals, with a qualification round to eliminate eight of the lowest-ranked