The United States took the first two golds of the weekend at the International Swimming Federation (FINA) Diving Grand Prix in Madrid, but they were undeniably helped by the absence of Chinese divers because of the coronavirus outbreak.
The two events held on the first day of action at Centro Deportivo M86 - the women's 3 metres springboard and men's 10m platform - were both won by Chinese athletes last year.
Kassidy Cook won the women's 3m springboard competition ahead of team-mate Sarah Bacon, scoring of 308.10 to Bacon's 297.60.
Cook moved into first after two modest rounds and never left top spot from round three onwards.
Bacon spent most of the final in the silver-medal position and held on despite late pressure from Sweden's Emma Gullstrand.
The Swede finished third, dropping Canada's 17-year-old Margo Erlam out of the medal positions.
In the men's 10m, David Dinsmore never looked in doubt for the win and scored 436.95.
That was well ahead of 18-year-old Canada Rylan Wiens, who was the silver medallist with a score of 426.20.
A distance away, Belarus' Artsiom Barouski managed to pull out a bronze medal with his final dive, having spent the rest of the competition in fourth.
No Chinese diver was able to travel to Spain because of fears of spreading coronavirus.
The death toll has risen to 1,380, according to Chinese authorities, while there are nearly 64,000 infections in the country.
China's Zhang Minjie won the men's 10m platform event in Madrid last year, while Wei Ying was victorious in the women's 3m springboard contest and team-mate Ma Tong took silver.