The 2011–12 Liga de Ascenso season is the second-level football league of Mexico.
The teams are re-seeded one to four in the semifinals, depending on their position in the general table.
Before the 2012 Clausura tournament started, Ciudad Juárez was disaffiliated due to economical problems.
(Source for Liguilla information[5]) The qualified teams play two games against each other on a home-and-away basis.
The teams ranked 2 to 7 in the regular stage progress to the quarterfinals, whilst the league winners qualify directly to the semi-finals.