DiCaprio was just 15 years old when he auditioned for the role, but Hasselhoff nixed the actor for the part, producers Michael Berk and Douglas Schwartz have revealed. “We actually had DiCaprio ready to be cast,” Berk said. “But David (Hasselhoff) thought he was too old to play his son. He thought it would make him look older.” The part eventually went to Brandon Call in season 1, who was replaced by Jeremy Jackson for eight seasons.