Adelaide City remains South Australia's most successful club, having won three National Soccer League titles and three NSL Cups. City was the first side from South Australia to ever win a continental title when it won the 1987 Oceania Club Championship and it has also won a record 17 South Australian championships and 17 Federation Cups. Adelaide City contests the Adelaide derby against its crosstown rival West Adelaide, also a former national champion having been the first South Australian club to win the national league in 1978.