He attended the University of Nebraska his freshman year[1] where he became a two time All American and a member of UNL's 1990 NCAA Men's Gymnastics championship team.

After one season of NCAA competition,[1] Dimas left his athletic scholarship to train full-time in hopes of making a U.S. Olympic Team.

Following his athletic career, in 1992, Dimas graduated from Columbia University School of General Studies in New York City with a B.A.

He competed in all six of the men's apparatuses in qualification at the 1992 Summer Olympics in Barcelona where he received a gold medal on horizontal bar in the event final.

This was the second time that an American gymnast, male or female, won a gold medal in an Olympics held outside the United States.