 Ramba uchiverenga ndima iyi - Rivera akaita mutambo wake wekutanga kuEl Salvador muna 1988 uye akawana mitambo inosvika makumi manomwe nemana, achihwina zvibodzwa gumi neshanu. Akamirira nyika yake mumitambo makumi maviri nemiviri yeFIFA World Cup uye akatamba pa1991 FIFA World Cup., 1993, 1995 uye 1999 UNCAF Nations Cups uye aive asiri-kutamba nhengo yechikwata pa1996 CONCACAF Goridhe Mukombe asi akatamba pa1998 CONCACAF Goridhe Mukombe. 