Born in Ciudad Bolívar, Pérez started his professional baseball career in the Venezuelan League as a 19-year-old rookie during the 1988–1989 season. He was signed by the Blue Jays organization as an amateur free agent in 1989.[1]
Besides, Pérez spent his entire 27-season career in the Venezuelan League with the Cardenales de Lara club between the 1989–90 and 2014-15 tournaments to become a living legend in his country, where he is nicknamed El Hombre Historia (The History Man). Such a nickname comes from the fact he set several all-time records in Venezuelan baseball history, including for the most home runs (125), RBIs (738), doubles (222) extra-base hits (382) and game appearances (1,300).[3]