At the Maria Lenk Trophy in Rio, Denmark's Lotte Friis claimed two victories in one session, starting with a 1:59.65 in the 200m free and ending with a 16:11.76 in the 1500m free, the event in which she claimed there world title in Shanghai last year.
In the 200m, Friis, racing for local club Corinthians, set a Brazilian Championship record of 1:59.65 ahead of Manuella Lyrio, 2:00.37, and Laure Manaudou (FRA), on 2:00.43.
In the 30-lapper, the Danish world champion fended off Cecilia Biagioli, on 16:13.84, with open-water specialist Poliana Okimoto on 16:47.37 for bronze as the last inside 17mins.
Joao Luca took the men's 200m free in 1:48.26, the minor spoils going to Nicolas Oliveira, on 1:48.79, and American Charles Houchin, on 1:48.83. Rodrigo Castro the last man inside 1:50, on 1:49.75.
Tales Cerdeira clocked 2:12.40 to keep Felipe Lima at bay by 0.22sec in the 200m breaststroke, Henrique Barbosa (back from the warning he received with Cesar Cielo and two other teammates after testing positive for a banned substance last year that CAS accepted made it into a food supplement through cross-contamination) third in 2:13.52.
The women's equivalent crown went to Pamela Souza in 2:31.66, while the dash backstroke finals went to Daniel Orzechowski in 24.44 and Fabiola Molina, on 28.74, 0.07sec ahead of Manaudou.