ran a night series, which invited clubs and representative sides from around the country to participate in a knock-out tournament parallel to the premiership seasons, which Victorian sides still dominated. With the lack of international competition, state representative matches were regarded with great importance. Due in part to the VFL poaching talent from other states, Victoria dominated interstate matches for three-quarters of a century. State of Origin rules, introduced in 1977, stipulated that rather than representing the state of their adopted club, players would return to play for the state they were first recruited in. This instantly broke Victoria's stranglehold over state titles and Western Australia and South Australia began to win more of their games against Victoria. Both New South Wales and Tasmania scored surprise victories at home against Victoria in 1990. Towards a national league The term "Barassi Line", named after VFL star Ron Barassi, was coined by scholar Ian Turner in 1978 to describe the "fictitious geographical barrier" separating the rugby-following parts of New South Wales and Queensland from the rest of the country, where Australian football reigned. It became a reference point for the expansion of Australian football and for establishing a national league. The way the game was played had changed dramatically due to innovative coaching tactics, with the phasing out of many of the game's kicking styles and the increasing use of handball; while presentation was influenced by television. In 1982, in a move that heralded big changes within the sport, one of the original VFL clubs, South Melbourne, relocated to Sydney and became known as the Sydney Swans. In the late 1980s, due to the poor financial standing of many of the Victorian clubs, and a similar situation existing in Western Australia in the sport, the VFL pursued a more national competition. Two more non-Victorian clubs, West Coast and Brisbane, joined the league in 1987 generating more than $8 million in license revenue for the Victorian clubs and increasing broadcast revenues which helped the Victorian clubs survive. In their early years, the Sydney and Brisbane clubs struggled both on and off-field because the substantial TV revenues they generated by playing on a Sunday went to the VFL. To protect these revenues the VFL granted significant draft concessions and financial aid to keep the expansion clubs competitive. The VFL changed its name to the Australian Football League (AFL) for the 1990 season, and over