The Liga Pro Banco Pichincha, simply known as the Liga Pro, or the Serie A, is a professional football league in Ecuador. At the top of the Ecuadorian football league system, it is the country's premier football competition. Contested by sixteen clubs, it operates a system of promotion and relegation with the Serie B, the lower level of the Primera Categoría. The season runs from February to December and is usually contested in multiple stages. The main sponsor is Banco Pichincha, and It is known as Liga Pro Banco Pichincha.