Pedzisa mutsara unotevera: Akagadza nhangemutange yakanakisisa yomunhu oga ye 8057 mumusha wake wokuHavana muna March 2008, achiputsa chipingamupinyi chemapoinzi 8000 kwenguva yokutanga. 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 yokutanga yevakuru gore rakatevera racho muHavana pa
2009 Central American neCaribbean Championships muAtletics, kupedzisa semumhanyi kumashure kwemuzukuru Leonel Suárez asi achikwanisa kuwana zvibodzwa zvinopfuura zviuru zvisere kechipiri muhupenyu hwake nehuwandu hwekupedzisira hwe8013.