He won bronze medals at the WKF World Championships in karate in 2002, 2004, 2006, 2014, and 2016 in the men's individual kata.

He has also won 23 Pan American Karate Federation Senior Championships Medals 23 times to date.

[citation needed] Diaz's first achievement was reaching gold at the 5th Young Pan American Karate Do Championship back in 1993 in Salinas, Puerto Rico.

[9] Diaz won his first Olympic Cycle competition at the 1998 Central American and Caribbean Games held in Maracaibo, Venezuela.

[14] He participated at the Young WKF World Championship in 1999 in Sofia, Bulgaria, where finished ninth.

[15] Diaz has participated at the PKF Pan American Championship since 1998 achieving gold 16 times and reaching the podium in every edition.

He earned the silver medal after losing a tight battle against Luca Valdesi with the score 3–2.

[24] In the 2018 World Championship held in Madrid, Diaz lost his semifinal round to Spain's Damian Quintero 0–5.

[32] Diaz holds a Bachelor of Science in Communication with a Major in Advertisement by the Caracas-based Andrés Bello Catholic University.