The Canadian pair figure skaters remain undefeated this season after winning a gold medal Saturday at the ISU Four Continents competition.
Duhamel, of Lively, Ont., and Radford, of Balmertown, Ont., produced the best scores in both the short program and free skate to finish with 219.48 points. Three Chinese teams followed including Cheng Peng and Hao Zhang in second with 201.45 and Qing Pang and Jian Tong in third with 199.99.
''I'm really proud we how we handled the pressure,'' said Radford. ''We kept it together and still executed a strong performance and what I'm most excited about it that we had such a strong score here and we know we can do that much better.
"Heading into the world championships we'll be looking to improve upon that.''
The Canadians have won their four international events this season, including the ISU Grand Prix Final, as well as the national title last month.
''We're very proud of our effort here,'' said Duhamel. ''The highlight was landing the throw quad after we had a small mistake on the side-by-side triple Lutz.
"That's very difficult to do but we kept our focus and composure and that was very important for the rest of the program."
Up next for the Canadians is the world championship event in March.
''Going into the worlds we'll be looking to add more sharpness to the technical elements as well as more speed and energy throughout the program,'' said Duhamel.
Toronto's Lubov Iliushechkina and Dylan Moscovitch were sixth while Kirsten Moore-Towers of St. Catharines, Ont., and Michael Marinaro of Sarnia, Ont., finished ninth.
Denis Ten of Kazakhstan won the men's event ahead of second-place American Joshua Farris while Han Yan of China was third.
Nam Nguyen of Toronto was 11th just ahead of Vancouver's Jeremy Ten while Liam Firus of North Vancouver, B.C., finished 14th.