The Ecuadorian League, officially known as the Serie A, is the top professional football division in Ecuador. Established in 1957, it features several teams competing for the championship title each season. The league operates on a system of promotion and relegation with the Serie B, the second tier of Ecuadorian football. The league typically consists of 16 teams that play in a round-robin format, with each team facing every other team twice. The team with the most points at the end of the season is crowned the champion. The Ecuadorian League is known for its passionate fan base and has produced several players who have gone on to achieve international success.