Gayle Hopkins, who advanced to the final round in the men’s long jump at the 1964 Tokyo Summer Olympics, died in his sleep on Sunday night or early Monday morning in Tucson, Arizona, according to sources close to the matter.

Hopkins was 74.

He was a longtime administrator in the University of Arizona athletic department. He returned to the Tucson school, his alma mater, in 1983 and spent 27 years as an assistant to the athletic director before retiring in 2010. He worked closely with ex-Wildcats athletes and alumni and, as noted in biographical information posted on the university's athletic website, he directed "projects to influence former athletes to return to complete their degree."