Liga 1 (English: League One, BRI Liga 1 for sponsorship reasons with Bank Rakyat Indonesia) is the men's top professional football division of the Indonesian football league system. Administered by the PT Liga Indonesia Baru (English: New Indonesian League, LLC), Liga 1 is contested by 18 clubs and operates on a system of promotion and relegation with Liga 2. Top-flight professional league started in Indonesia from the 2008–09 season onwards. Prior to the 2008 reforms, the national competitions used a tournament format. Liga 1, which started in 2017, is the latest rebranding of the league. Thirty-six teams have competed in the top-tier league of Indonesian professional football, which has gone through multiple rebranding. Eight teams have been crowned champions, with…