The Eredivisie is the highest echelon of professional football in the Netherlands. The league was founded in 1956, two years after the start of professional football in the Netherlands. At the end of the 2012–2013 season it was ranked the ninth best league in Europe by UEFA. The top division consists of 18 clubs. Each club meets every other club twice during the season, once at home and once away. At the end of each season, the club at the bottom is automatically relegated to the second level of the Dutch league system, the Eerste Divisie (First Division). At the same time, the champion of the Eerste Divisie will be automatically promoted to the Eredivisie. The next two clubs from the bottom of the Eredivisie go to separate promotion/relegation play-offs. The play-offs are played in two groups. Each group has one Eredivisie club and three high-placed clubs from the Eerste Divisie. In both promotion/relegation play-off groups, each club plays a home-and-away series with the other clubs. The winner of each play-off group plays in the following season's Eredivisie, with the other teams going to the Eerste Divisie.