Career
Martínez started his professional career at local giants Comunicaciones before moving to Deportivo Marquense in 2006. In summer 2009 he joined Petapa, but in November 2009 he was deemed surplus to requirements. Martínez made his debut for Guatemala as a late substitute in an October 2002 friendly match against Jamaica and went on to collect a total of 51 caps, scoring no goals.
His final international was a November 2007 friendly match, also against Jamaica.