Australia–Japan football rivalry
The Australia–Japan football rivalry is a sports rivalry that exists between the national association football teams of each country, regarded as one of Asia's biggest football rivalries. The rivalry is a relatively recent one, born from a number of highly competitive matches between the two teams since Australia joined the Asian Football Confederation in 2006. The two teams have played each other in several significant matches, including a World Cup group stage match and the 2011 Asian Cup Final.
Football in Japan
Aside from the national cup, the Emperor's Cup established in 1921, there had been several attempts at creating a senior-level national championship. The first was the All Japan Works Football Championship (AJWFC), established in 1948 and open only to company teams. The second was the All Japan Inter-City Football Championship (AJICFC), established in 1955 and separating clubs by cities (any club, works, university or autonomous, could represent their home city and qualify) but the Emperor's Cup remained dominated by universities until the late 1950s. All these tournaments were cups following single-elimination formulas, similar to Serie A in Italy before 1929.