Adelaide United is a professional soccer club based in Adelaide, Australia. The club was founded in 2003 and competes in the A-League, the top tier of Australian soccer. Their home venue is Coopers Stadium, which has a capacity of around 16,500 spectators. Adelaide United is known as "The Reds" due to their traditional red home kit. Throughout their history, Adelaide United has achieved notable success. They won their first A-League Championship in the 2015-2016 season, defeating Western Sydney Wanderers in the final. Additionally, they have won the FFA Cup, an annual knockout competition in Australian soccer, on two occasions, in 2014 and 2018. Adelaide United has also represented Australia in continental competitions such as the AFC Champions League, showcasing their quality on the international stage.