Doubell's first major international victory in 800 metres was at the World Student Games in Tokyo in 1967 in a time of 1:46.7. His next season (the Olympic season) was severely curtailed by Achilles' tendon injuries, and he was unable to compete for six months prior to the Olympic Games in Mexico City. Doubell, however, was able to recover in time for Mexico City and won the 800 m gold medal, passing the pre-race favourite Wilson Kiprugut of Kenya down the straight to win in a world record equalling time of 1:44.3.
Doubell had planned to compete at the 1972 Olympics in Munich, but was prevented from doing so by calf injuries, which brought on his retirement from competitive athletics.[1]
Post-athletic career
After retirement from sports, Doubell enrolled at Harvard Business School. He then worked as a Head of Relationship Management and a Director and Divisional Head of Corporate and Institutional Banking of the Deutsche Bank Group in Australia. He was a Director of Telstra Stadium in Sydney until 2007.
