Between 1967 and 1985 there were two championships per year (Metropolitano and Nacional).
Between 1985 and 1991 it was contested via round-robin again, but with the European style calendar (season started in mid year).
Since 1991, it is contested with an Apertura and Clausura format, meaning there are two champions per season.
Since 2012, it is contested with a format similar to this last, with two champions per season, and a third, which is the winner of a final played between these two teams. The championships are named Inicial, which replaced the Apertura; and Final, which replaced the Clausura.
Teams
Titles
River Plate is the most successful team in Argentine domestic football, having won the league title 38 times.
Boca Juniors is the only team that have won at least one title in every decade.
River Plate holds the record for the longest winning streak playing away from home. They won 11 consecutive matches on the road between 1937 and 1938.
Ferro Carril Oeste holds the record for the longest clean sheet. In 1981, they didn't concede a goal for 1075 minutes. This included a run of ten complete games without conceding a goal. Their goalkeeper was Carlos Barisio.
Racing Club holds the record for the longest sequence of tied matches. They drew ten league games in a row between 20 April and 14 October 1990.
In one championship
Independiente holds the record for the most goals in one season. They scored 115 in 1938.
Racing Club won the championship with the most points during the first year-long form of dispute (1931–1966), with 61 points in 1966.
River Plate won the championship with the most points in a Nacional, with 63 points in 1977.
River Plate won the division with the fewest points, with 24 in the 1993 Apertura (10 points above the last placed team).
Boca Juniors is the team who has spent most fixtures in the first position, without winning the championship. They were first throughout all the 2006 Apertura (all 19 games), but lost to Estudiantes de La Plata on a tiebreaker final.
Promotion and relegation
Boca Juniors is the only team that has never competed in the second division having played in the first division, playing all seasons in the Primera since 1913.
Quilmes is the team with most promotions to and relegations from the first division, a total of eight for each.
Rosario Central is the only team that have won a championship in the season following their promotion to the Primera. They did so in 1986–87.
Talleres de Córdoba were probably the best team ever to suffer relegation. They finished third in the 2004 Clausura, but were relegated by the points aggregate system, which relegates the teams with the worst points averages over the last three seasons.
San Martín de Tucumán is the only club that reached the Primera División from the lowest possible category (the Liga Tucumana de Fútbol), then was relegated all the way back to that category and from there reached the Argentine top division again.
Negative
The worst campaign by a team was in 1939, when Argentino de Quilmes finished with 4 points in 34 matches, without a single victory.
Argentinos Juniors holds the record of most consecutive games lost, with 14 between 26 April 1936 and 26 July of that year.
Ferro Carril Oeste set the record for the longest run without scoring. They amassed 875 minutes without a goal between the 1998 Apertura and the 1999 Clausura. The team's supporters displayed a tifo with a simple message: "SCORE 1 GOAL" (in Spanish: "HAGAN 1 GOL").[1][2]
Platense set the record for the most number of managers in one season. They had 8 different managers in the 1966 championship.
Atlanta set the record for the most players in a season. They used 62 different players in 1932.
Most seasons
The following list shows the number of seasons in the First Division only of the first 10 teams.
Bernabé Ferreyra is the scorer with the highest goal average: 206 goals in 197 matches, averaging 1.04 goals per match.
Héctor Scotta scored the highest number of goals in a single calendar year (60 goals for San Lorenzo in 1975: 32 in the Metro and a further 28 in the Nacional).
Arsenio Erico scored the highest number of goals in a long tournament (1931–1966, and 1985–1991). He scored 47 goals in 34 games in 1937 for Independiente. He also has the highest goal average in one tournament, with 1.38.
Sergio Agüero became the youngest player ever to appear in the Primera, taking the record previously held by Diego Maradona. On 7 July 2003 he appeared for Independiente at the age of 15 years and 35 days.
Diego Maradona is the youngest ever top scorer in the Argentine topflight. He was only 17 when he topscored in the 1978 Metro.
The record for the highest number of games for a single club is held by Ricardo Bochini, who played 638 games for Independiente, between 1972 and 1991.
Pedro Catalano, a goalkeeper of Deportivo Español, holds the record for most consecutive matches, with a run of 333 uninterrupted matches between 27 July 1986 and 29 November 1994.
James Rodríguez (Colombian) debuted for Banfield with 17 years of age in 2008, being the youngest ever expatriate footballer to play in the Argentine Primera.
The match between Banfield and Puerto Comercial also holds another three records: Juan Taverna scored seven goals, which is the most goals by a player in a single match, the most goals scored by a team in a single match with 13, and the record for the largest margin of victory ever (12 goals).
The world record for the longest penalty shootout occurred in a league match when Argentinos Juniors beat Racing Club 20–19 on a penalty shootout after 44 penalties were taken, in 1988. The rules of the time granted an extra point for the winner on penalties after a tied match.
The match between Chacarita Juniors and Argentino de Quilmes in 1939 that Chacarita won 5–1, was the match with most headed goals, and the most headed goals by a player in a single match. Fabio Cassán headed four goals, and Argentino de Quilmes also scored with a header, totaling five goals for the match.