first televised game of rugby league in Australia. In the UK live coverage of professional rugby league began in the early 1960s, exposing the game to a national audience. David Attenborough, then controller of BBC2, made the decision to screen rugby league games from a new competition specially designed for evening televising, the BBC2 Television Floodlit Trophy. Although it was widely seen as a gimmick, it proved a success, and rugby league has featured on television ever since, to the point where (like most sports) income from selling broadcasting rights is the single greatest source of revenue for the game. In Australia the 1967 NSWRFL season's grand final became the first football grand final of any code to be televised live in Australia. The Nine Network had paid $5,000 for the broadcasting rights. This period also saw further alterations to the rules of the sport. In 1964 substitutes were allowed for the first time, but only for players injured before half-time. In 1966 limited tackles were introduced. In 1967 professional matches were first allowed on Sundays. Also this year the number of times a team could retain possession after a play-the-ball was limited to four tackles. The concept of limited tackles had existed in American football since the 1880s, and it was hoped that this would encourage more attacking play, and prevent teams from simply playing to maintain possession of the ball at all costs. Although successful in this respect, it was felt that four tackles did not give sufficient time to develop an attack, with play often being characterised by pure panic. In 1971, the number of tackles allowed was increased to six, and has remained so ever since. That year the value of field goals was reduced as well, from 2 to 1. In Britain's 1971–72 season, sponsors first entered the game: brewers Joshua Tetley and cigarette brand John Player. In 1976 Sydney club Eastern Suburbs set a precedent with a major sponsor, City Ford appearing on their jersey. In 1977 Australian forward Graham Olling made headlines when he became the first rugby league player to admit to taking anabolic steroids, which at the time were not illegal in the sport. 1980s and early 1990s In 1980 the first State of Origin match was played in Australia. This pitted teams representative of Queensland and New South Wales against each other. Although matches between the two had taken place