Kammala wannan jumla: Bayan fitowar Puerto Rico a gasar Olympics a Athens, Diaz ta dakatar da shirin ritaya, yayin da ta gama a baya na Koriya ta Kudu Shin Kyung-hyeon a cikin nauyin nauyi a gasar Olympics ta Duniya a shekara ta 2008.
Gasar Zakarun Taekwondo ta Duniya ta 2005 a Madrid, Spain, sannan ta murkushe Sulayyil Madrigal na Mexico don samun zinare na karshe na zinare hudu a Wasannin Amurka ta Tsakiya da Caribbean na 2006 a Cartagena, Colombia.