and USC Lion, which later merged with Port Adelaide to become Port Adelaide Lion, and now continue to participate in the South Australian Amateur Soccer League. Adelaide City are the most successful club in history, having won 3 National Soccer League championships, 19 first division championships and 18 Federation Cups. Clubs can apply to enter the State League 2 competitions when a space is avaliable, with the team being in one of the regional leagues or the amateur league. The most recent teams to have joined being Pontian Eagles in 2020, Modbury Vista in 2017, Fulham United and Vipers FC both in 2016, the latter two having won promotion to State League 1. Women's teams League system The soccer pyramid in South Australia comprises 4 levels below the A-League Men, with promotion and relegation between the top 3 levels. It also includes the South Australian Amateur Soccer League, which is not officially apart of the league system. In total, there are 34 divisions in South Australia. Men's pyramid Season winners Performance by club Over the history of South Australian football, 26 different clubs have won the title. The most successful club is Adelaide City, with 19 titles to its credit, 7 of those coming since their return from the National Soccer League in 2004. Clubs in bold currently play in the top division, and clubs in italics no longer compete in semi-professional competitions or are defunct. All Time First Division Ladder The following shows every team who has participated in the first division, from 1903 up to and including 2022. Teams in bold are competing in the first division in 2023. References External links South Soccer in South Australia Sports governing bodies in South Australia 2005 establishments in Australia Sports organizations established in 2005