The AAU was officially charged with the organization and operation of many sports in the US .
The Amateur Athletic Union ( AAU ) was the official organization responsible for the running of all amateur sports in the United States , established in 1888 .
The organization was officially charged with the organization and operation of many sports in the United States .
The Amateur Athletic Union ( AAU ) was the official organization responsible for the running of all amateur sports in the United States , established in 1888 .