Segunda Division B de Mexico is a former football league in Mexico that was the fourth tier of the league system. It was founded in 1981 and abolished after the 1993–94 season, when it was replaced by the Primera División A de México.
History.
The league was founded in 1981 and initially had 20 teams that were split into 4 groups. The teams during the inaugural season were Irapuato, Bachilleres, Lobos de Tlaxcala, Tuberos, Celaya, Martínez de la Torre, Deportivo Neza, U.A.B.J., Uruapán, U.V. Xalapa, U.A.Tamaulipas, Iguala, U.P.A.E.P., Albinegros de Orizaba, Industriales Tepatitlán, Tabasco, Estudiantes Chiapas, Átomos, Salmantino, and Durango. Division B had promotion and relegation to the Segunda División (2nd tier) above and the Tercera División (3rd) below.