The Torneo Descentralizado is the national Peruvian professional league for association football clubs. At the top of the Peruvian football league system, it is the country's primary football competition. The responsibility for its organization lies within the Asociación Deportiva de Fútbol Profesional. Contested by 16 clubs, it operates on a system of promotion and relegation with the Segunda División and the Copa Peru. Seasons run from February to December but the competition format varies from season to season. Most games are played on Saturdays and Sundays, with a few games played during weekday evenings. It is currently sponsored by Movistar TV and therefore commercially known as the Torneo Descentralizado Copa Movistar.