Doweiya was at the Commonwealth Games 2002 in Manchester in the class up to 77 kilograms third; after the Indian winner Satheesha Rai was disqualified for doping, Doweiya received the silver medal in the push and duel. At the Commonwealth Games 2006 in Melbourne , the Nauruer reached 10th place in the weight class up to 69 kilograms. In addition, Doweiya won the Oceania Championship up to 77 kilograms twice (2001, 2004).