Rubuta ci gaba don wannan sakin layi - Olivas ya fara bugawa Nicaragua wasa a watan Yulin 1992 FIFA gasar cin kofin duniya wasan neman cancanta a kan El Salvador kuma ya sami jimillar wasanni 11, ba tare da zira kwallaye ba. Ya wakilci kasarsa a wasanni 4 na gasar cin kofin duniya na FIFA kuma ya taka leda a gasar cin kofin duniya ta 1993.
, 1995, 1997 da kuma 1999 UNCAF Nations Cups.