Who has been most impressive so far?

Germany won 4-0, but that scoreline is misleading, the Germans scored two late goals after Australia had their leader sent off with a very questionable red card.

South Korea and Holland both won 2-0 and looked good doing it.

Ghana and Japan played fairly well in 1-0 wins.

Argentina and Nigeria both looked good going forward and questionable at the back, and the South Americans managed to edge it.

For me, Ghana may have been the most impressive team overall. They looked good going forward, despite some questionable finishing, and very solid at the back. I still think Serbia will have some say in that group, and Germany are more than likely to go through. Australia will be without Tim Cahill for one match. It has to be said that at this point Ghana are in a very good position.