 Díaz has earned the nickname of "South American Xavi", as both of them have a great ball control capabilities and excellent passing skills.In June 2015, he scored a 91st minute free-kick goal that helped save Hamburger SV from its first ever relegation from the Bundesliga and is considered to be one of the most important goals in the club's 128-year history.Díaz began his career in Universidad de Chile youth academy, being immediately accepted by Jorge Cabrera, then coach of the club's lower divisions.