The Greek national football team, ranking 12th in the world in 2014 (and having reached a high of 8th in the world in 2008 and 2011), were crowned European Champions in Euro 2004 in one of the biggest upsets in the history of the sport. The Greek Super League is the highest professional football league in the country, comprising sixteen teams. The most successful are Olympiacos, Panathinaikos, and AEK Athens.