Ramba uchiverenga ndima ino - Akagadzira nhangemutange yake yakanakisisa ye8057 mumutambo wemakwikwi gumi muguta rake rokuHavana muna March 2008, achipfuura chinhambwe chemapoinzi 8000 kekutanga. Díaz akatanga kuonekwa pamutambo wepasi rose munguva pfupi yapfuura pa2008 Summer Olympics, asi haana kukwikwidza mumutambo wake wehunyanzvi asi asi sechikamu cheCuba 4 × 400 metres relay timu naYunier Pérez, William Collazo naOmar Cisneros. Chikwata chakatadza kufambira mberi kupfuura chikamu chemakwikwi. Akakunda menduru yake yekutanga yevakuru gore rakatevera muHavana ku2009 Central American neCaribbean Championships muAtletics
, achipedza ari wechipiri shure kweanobata nyika Leonel Suárez asi achikwanisa kuwana zvibodzwa zvinodarika zviuru zvisere kechipiri muhupenyu hwake aine huwandu hwekupedzisira hwe8013.