Rubuta ci gaba don wannan sakin layi - Rivera ya fara bugawa El Salvador a 1988 kuma ya sami jimillar wasanni 74, inda ya zira kwallaye 15. Ya wakilci kasarsa a wasanni 22 na gasar cin kofin duniya na FIFA kuma ya taka leda a gasar cin kofin duniya ta 1991, 1993
, 1995 da 1999 UNCAF Nations Cups kuma ya kasance ba dan wasan kungiyar ba a gasar 1996 CONCACAF Gold Cup amma ya taka leda a gasar 1998 CONCACAF Gold Cup.