Andres Munoz and Anhlly Perez claimed a Colombian speed skating double at the World Roller Games in Nanjing today.
Munoz won the 500 metres sprint in a time of 39.793sec over Chilean Lucas Silva, who clocked 39.929.
Third place was taken by Hong Seunggi of South Korea in a time of 40.429.
Honours in the corresponding women's event were claimed by Perez in 43.528.
An Yiseul of South Korea finished second, in 43.536 and third place went to Laethisia Schimek of Germany.
She crossed in a time of 43.651 at the Nanjing Olympic Sports Center Gymnasium.
Rain continued to cause havoc elsewhere.
United States were awarded the gold medal in the roller derby event after the final matches were cancelled.
They had been leading the standings following the round-robin section.
Australia took the silver medal and Spain the bronze.