In 1976, the National Football League, which was the national administrative body for Australian rules football at the time, established the NFL Night Series to succeed the Championship of Australia. Played concurrently with the premiership season, the Night Series was contested among twelve clubs from the VFL, SANFL and WANFL invited based on their finishing positions from the previous year. The event was mostly played on Tuesday nights, with night games at Norwood Oval in Adelaide, and all games were televised live in colour on Channel 9, which opened up unprecedented revenue streams from television rights and sponsorship opportunities for the sport. The NFL began plans to expand its Night Series to incorporate more teams from the VFL, SANFL and WAFL, as well as state representative teams from other states.