a year at Adelaide Oval, one against interstate rivals Melbourne Victory and traditional rivals Sydney FC. Even though Adelaide lost the first of these two encounters 3–1, it was South Australia's largest Association Football crowd in history with 25,039 people filling the stands, many others were turned away at the gates. The second match in 2009 saw 23,002 people attend the game. Hindmarsh Stadium seating capacity is 16,500. Adelaide United's first home game in the now-defunct National Soccer League saw over 15,000 supporters watch Adelaide win 1–0 over the Brisbane Strikers. A-League crowds have averaged 10,947 in 2005–06 and over 12,000 supporters attending in both 2006–07 and 2007–08 seasons. Even with a lack of on-field success, crowds at United's games remained healthy during the 2009–10 season relative to other clubs, largely due to the club's strong community-based initiatives. The record attendance for Hindmarsh Stadium was a full house of 17,000 on 12 November 2008 against Gamba Osaka in the historic second leg of the ACL final. Support Adelaide United's main active supporters' group is called the Red Army. Rivalries Adelaide United's rivals are Melbourne Victory. Adelaide was again one of two of the leading teams in the 2006–07 season this time against Melbourne that saw an altercation between John Kosmina, the Adelaide United manager, and Kevin Muscat after the Victory captain knocked Kosmina over after entering the technical area to retrieve a ball. Kosmina then jumped up and grabbed Muscat around the throat for a few seconds. Season events culminated in the year's grandfinal that saw Adelaide captain, Ross Aloisi, sent off and Melbourne winning 6–0. The rivalry went beyond extreme after Melbourne defeated Adelaide United 1–0 in the 2008–09 grand final with United imported striker, Cristiano, given a controversial straight red card. The rivalry then went even further when Adelaide United defeated Melbourne 4–1 at AAMI Park, after United had been suffering a record-breaking 10-game losing streak against the Victory. Affiliated clubs Qingdao Red Lions Both the Adelaide and Qingdao based clubs are owned by current chairman Piet van der Pol and the goal of the partnership is to give more opportunities to Chinese players. Then Director of Football Bruce Djite has said, "The idea is to develop Chinese players to create stronger links between us and Qingdao Red Lions." Chen Yongbin was the first player to sign from Qingdao to Adelaide on a one year deal. He did