Which prompted me to go back and calculate to the day. So revised (calculated for ages to the day on Aug. 3): Brazil: 27.57 China: 25.10 South Africa: 25.78 Sweden: 26.79 Australia: 24.18 Canada: 26.04 Germany: 27.25 Colombia: 24.84 France: 27.39 New Zealand: 26.48 USA: 27.82 And after that...Wow! Brazil, Germany, France, and USA are very close in average ages. Australia, while young in age, have some experienced players who've been together for awhile. Many of them got their first caps very young. Contrast that with the US that while the oldest roster in age includes actually quite a few Olympic newbies.