Pedzisa mutsara unotevera: Rivera akaita mutambo wake wokutanga kuEl Salvador muna 1988 uye akawana mitambo 74 yose, achiwana zvibodzwa 15. Akamirira nyika yake mumitambo makumi maviri nembiri yeFIFA World Cup uye akatamba pa1991,
1993, 1995 uye 1999 UNCAF Nations Cups uye aive asiri-kutamba nhengo yechikwata pa1996 CONCACAF Goridhe Mukombe asi akatamba pa1998 CONCACAF Goridhe Mukombe.