[6][7][8][9][10][11] Trigueros has played the majority of his career for Luis Ángel Firpo, with whom he won four league titles in 1989, 1991, 1992 and 1993.
He formed a legendary central defensive pairing with Leonel Cárcamo in the national team and was part of the most successful team in the history of Luis Ángel Firpo, lining up alongside players like Marlon Menjívar, Mauricio Cienfuegos and Raúl Díaz Arce.
In March 2005, Trigueros was given a testimonial match, with veteran players of Luis Ángel Firpo and Once Municipal.
In March 2018, Trigueros signed as new coach of Luis Ángel Firpo for the Clausura 2018 tournament, replacing Eraldo Correia.
Trigueros made his debut for El Salvador in a March 1988 friendly match against Mexico and has earned a total of 47 caps, scoring 1 goal.