Ascenso MX is the second tier of professional football in Mexico of the Mexican football league system. The champion of the competition is promoted to Liga MX (top-flight tier). The bottom team is relegated to Liga Premier (the third tier). It is currently sponsored by BBVA through its Mexican subsidiary BBVA Bancomer, and thus officially known as Ascenso BBVA MX. Formerly known as Primera División A (First Division A) the league rebranded in 2009 its name and competition format to Liga de Ascenso. It was rebranded in 2012 as Ascenso MX. The major changes: clubs do not need a FMF certification to be promoted and that the competition no longer used group stages.