The 2009–10 Primera División de México season is the 63rd professional season of Mexico's top-flight football league, and 13th season in which the Apertura and Clausura system is used. The season is split into two tournaments—the Torneo Apertura and the Torneo Bicentenario—each with identical formats and each contested by the same eighteen teams.
Seventeen teams returned for this season. Necaxa was relegated the previous season after accumulating the lowest coefficient over the past three seasons. They were replaced by Querétaro, who was promoted from the Liga de Ascenso.
The 2009 Torneo Apertura was the first tournament of the season. The tournament began on July 24 and ended on December 13. Defending champion UNAM failed to defend their title after missing the playoffs. On December 13, 2009, Monterrey defeated Cruz Azul 6–4 in aggregate score to win their third title. Cruz Azul forward Emanuel Villa won his first golden boot after scoring 17 goals, five more than Héctor Mancilla who won it the two previous tournaments.
Updated to match(es) played on November 14, 2009. Source: FeMexFut Rules for classification: 1st points; 2nd goal difference; 3rd goals scored; 4th head-to-head score; 5th away goals; 6th draw Notes:
^The berth to the 2010 Copa Libertadores goes to the highest placed team currently not participating in the 2009–10 CONCACAF Champions League. This excludes Toluca, Pachuca, Cruz Azul, or UNAM from qualifying to the Copa Libertadores.
Updated to match(es) played on November 15, 2009. Source: FeMexFut(in Spanish) Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.
The 2010 Torneo Bicentenario is the second tournament of the season. The tournament began on January 16 and ended on May 15. The tournament got its name (the Bicentennial tournament) to commemorate the bicentennial anniversary of the Mexican independence.
Updated to match(es) played on April 25, 2010. Source: FeMexFut(in Spanish) Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.