Dee ihe na-esote paragraf a - Del Olmo nwetakwara 51 caps na 3 ihe mgbaru ọsọ maka Mexico mba otu. O mere egwuregwu mba ụwa mbụ ya na 29 June 1993 megide Costa Rica, na mmeri 2 <unk> 0. N'okpuru onye nchịkwa Miguel Mejia Baron, del Olmo nọchitere anya Mexico na CONCACAF Gold Cup n'afọ ahụ ma mee ndị otu maka 1994 FIFA World Cup, ebe ọ gbara egwuregwu mbụ nke Mexico megide Norway, Ireland, na Italy. Ọ pụtakwara na Copa América 1995
na 1996 CONCACAF Gold Cup, yana ọtụtụ ndị tozuru etozu maka 1998 FIFA World Cup, mana ọ tụfuru na Manuel Lapuente ikpeazụ World Cup squad. Mgbe ogologo oge na-anọghị na otu ahụ, Enrique Meza kpọrọ Del Olmo na afọ 32 na 2001. O nwetara okpu ikpeazụ ya na 16 June 2001 na mmeri 2-1 na Estadio Azteca na Costa Rica na ntozu maka 2002 FIFA World Cup.