Argentina - Primera Division
The Primera División is a professional football league in Argentina. It is the country’s premier football division and is at the top of the Argentine football league system. Contested by twenty clubs, it operates on a system of promotion and relegation with the Primera B Nacional. The season runs from August to May of the following year. Each season is divided into two tournaments, the Inicial and Final. The winners of the tournaments will play a final match to decide the champion.In 1891 the Association Argentine Football League was established by Alex Lamont of St. Andrew’s Scots School,being the first football league outside of the British Isles. The first Primera División matches were played on 12 April 1891: Buenos Aires FC vs. St. Andrew’s and Old Caledonians vs. Belgrano FC.The Primera División turned professional in 1931 when 18 clubs broke away from the amateur leagues to form a professional league. Since then, the season has been contested annually in four different formats and calendars. The league has been under its current format since the 1991–92 season. On 2012 IFFHS ranks the Primera as the second strongest league in the world.