Despite early success by Australia, Ecuador and Ghana, the tournament marked a return to dominance of the traditional football powers. Four years after a 2002 tournament in which teams from North America (United States), Africa (Senegal), and Asia (South Korea) made it deep into the knockout stages and Turkey finished third, all eight seeded teams progressed to the knockout stages, and none of the quarter-finalists were from outside Europe or South America. Six former champions took part in the quarter-final round, with Ukraine and Euro 2004 runners-up Portugal as the only relative outsiders. Argentina and Brazil were eliminated in the quarter-finals, leaving an all-European final four for only the fourth time (after the 1934, 1966 and 1982 tournaments).