Primera División A (Méxican First A Division) is a Mexican football tournament.
This season was composed of Invierno 2002 and Verano 2003.
The promotion final faced Irapuato against León to determine the winner of the First Division Promotion.
Before the celebration of the games a controversy was unleashed, because it was made believe that the board of the Club Leon had acquired the Irapuato.
Subsequently, an armed command supposedly paid by the owners of the León occupied the Sergio León Chávez stadium, a few days later the fans recovered the building accompanied by police and military elements.