The system of the tournaments is round-robin. 12 teams play two rounds of 11 dates either away or home games, in total 22 dates in each tournament. Each year tournaments are divided in two independents tournaments: the Torneo Apertura (Opening Tournament) from February to July, and the Torneo Clausura (Closing Tournament) from July to December. Relegation is based on an averaging system. At the end of each season, the two teams with the worst three-year averages are relegated, and the two best teams in the "División Intermedia" (second division) are promoted to Primera División.