Adelaide United is a professional football club and a founding member of Australia's premier competition, the A-League. Based in the city of Adelaide, South Australia, the team plays its home matches at the iconic Hindmarsh Stadium, also known as Coopers Stadium. The club's full name is Adelaide United FC, its colors are red, black, and gold, and it is currently owned by a consortium of local businessmen. Founded in 2003, the club was formed to represent South Australia in the new national league. The early years were marked by instant success, reaching the A-League Grand Final in the inaugural 2005-06 season. The peak era arrived under manager Guillermo Amor, who guided the Reds to a historic A-League Premiership and Championship double in the 2015-16 season, playing a captivating style of football. The modern era sees the club as a perennial finals contender, with recent seasons featuring strong performances in the AFC Champions League and a core built around players like Craig Goodwin and Ben Halloran. The fan base, known as the "Red Army," is one of the most passionate and vocal in the country, creating an intimidating atmosphere at Hindmarsh. Adelaide United remains a proud and competitive pillar of Australian football.