Born in
León, Guanajuato, Monjaraz began playing football with local side
Club León. He debuted in the
Mexican Primera División with León in 1999, and would feature for
C.F. La Piedad,
Chiapas,
Puebla F.C. and
San Luis F.C. in the league until 2009. While with San Luis, Monjaraz participated in the
Copa Libertadores, the club's first entry into international club competition. ==Honours==