Topic summary
SANFL

Extracted from the Wikipedia article South Australian National Football League.
1980–1989: VFL leaves ANFC and expands whilst SANFL struggles
Four clubs Port Adelaide (Premiers 1980,1981,1988,1989 RU 1984), Norwood (Premiers 1982,1984 RU 1980), North Adelaide (Premiers 1987, RU 1985, 1986 & 1989) and Glenelg (Premiers 1985,1986 RU 1981,1982,1987,1988) dominated the SANFL in the 1980s, accounting for nine premierships. The only year being the exception was 1983 when West Adelaide defeated Sturt in the Grand Final for their first premiership since 1961. In the decade between 1979 and 1989 only three clubs, Central District, Woodville, both admitted to the SANFL in 1964, and West Torrens were the only clubs not to reach at least one grand final. The exodus of high quality players to the VFL accelerated in the 1980s. In this same decade only Hawthorn (1983, 1986, 1988 & 1989), Carlton (1979, 1981, 1982 & 1987), Richmond (1980), and Essendon 1984 & 1985) were successful in the VFL. Only Collingwood (1979, 1980 & 1981), Melbourne (1988) and Geelong under first year expat coach and former Woodville player Malcolm Blight (1989) would reach a VFL grand final. In 1981 the VFL rejected a SANFL bid to enter a composite South Australian team to its competition. Night football was introduced in 1984 after floodlights were installed at Football Park.The SANFL introduced a player retention scheme in 1988 in an attempt to maintain the quality of the competition in the face of falling attendances.