Career
In 2003 he had a short spell at Chalatenango before joining Luis Ángel Firpo. He then moved to Isidro Metapán and San Salvador F.C. before another two years at Once Municipal. On March 31, 2006, he scored his 100th goal in the Salvadoran Premier Division after scoring two goals against Águila.
Martínez made his debut for El Salvador in a March 1999 UNCAF Nations Cup match against Guatemala and has earned a total of 21 caps, scoring no goals.
His final international game was a March 2004 friendly match, also against Guatemala.