 Guerrero akaita mutambo wake wekutanga kuHonduras munaKurume 1999 UNCAF Nations Cup mutambo wakanangana neBelize uye akawana huwandu hwe84 caps, achihwina zvibodzwa zvina. Akamirira nyika yake mumitambo makumi matatu nematatu yeFIFA World Cup uye akatamba mu1999, 2001, 2005uye 2009 UNCAF Nations Cups pamwe ne2000, 2005 uye 2007 CONCACAF Gold Cups. 