The Serie A has 36 teams (5 Liga de Expansión MX Reserve Teams and 31 Serie A Teams) divided into three groups. For the 2024–25 season, it will be a return of a short tournament format (Apertura & Clausura) consisting of 11 group matches and 3 inter-group matches (14 total) played home & away and the liguilla. The top two teams from each group and the two best third places at the end of the season will play in the Liguilla for a spot to play for promotion to Liga de Expansión MX provided that their stadiums meet the requirements to ascend.
The Serie A was created in the second half of 2008, with the participation and approval of the owners of the teams of the Second and Third Division, being next to Serie B part of the Liga Premier.
As of the 2024–25 Season, Atlético Morelia, Celaya, Correcaminos UAT, Mineros de Zacatecas and U. de G. all from Liga de Expansión MX will join the Liga Premier to give young players professional experience. However, only Correcaminos UAT and Leones Negros UdeG will have a reserve team, while Celaya, Atlético Morelia and Mineros de Zacatecas will have an associated team that will have its own identity.
Teams for 2024–25 season
The member clubs of the Serie A for the 2024–25 season are listed as follows.[4]
On June 28, 2024 Cafetaleros de Chiapas was renamed Jaguares F.C.[13] Originally the team would be a reserve squad of a Liga de Expansión MX club,[14] however on July 12, 2024 the project was rejected in the second tier of Mexican football, so finally Jaguares will compete in the Liga Premier – Serie A.[15]
On July 24, 2024 Zitácuaro was promoted from Serie B to Serie A as an expansion team.[26]
In–season changes
Apertura Tournament
After Week 5 Petroleros de Salamanca was moved to Estadio El Molinito, due to the fact that the club did not obtain permission to remain in the Estadio Sección XXIV, which had caused the team to play its first two home games at the facilities of the Mexican Football Federation, located in Toluca.[27]
Since Week 5 Acatlán F.C. was relocated to Arandas, Jalisco because the stadium registered by the team was damaged by heavy rains that occurred in the region where the club was located.[28]