 Ramba uchinyora ndima iyi - Akakunda menduru yebronze muboka rebhantamweight kuma1968 Summer Olympics muMexico City. Chang akakunda 1967 European Championship bronze medalist Nikola Savov mumutambo we16 uye 1959 European ChampionHorst Rascher mumakwikwi emakotafainari. Mumakwikwi ekupedzisira, Chang akatarisana naEridadi Mukwanga wekuUganda ndokumuwisira pasi mumutambo wechipiri asi akarasikirwa nesarudzo yakakamurwa. 