A percentage system was applied to all of today’s finals at the Brazilian Paralympic Training Center with Dias firstly picking up a victory in the men’s 50 metres freestyle with 99.42 per cent.

He was joined on the podium by Rio 2016 Paralympic silver medal-winning team-mate Phelipe Rodrigues, who finished second with 97.60.

The pair had also finished in the top three of the 100m freestyle yesterday, with Dias winning ahead of Rodrigues.

Chile’s Alberto Caroly Abarza Diaz was one of the few non-Brazilian swimmers to medal today, taking third with 97.57.

Dias then went onto to win the men’s 200m freestyle with a new Americas record time of 4 min 14.49sec.

Brazil’s Felipe Caltran added to his 100m butterfly win from yesterday by coming second with 93.95.

His compatriot Andre Luiz Bento Da Silva Filho completed the top three with 85.32.

The home nation enjoyed a further four podium sweeps today.

Having qualified for the 2017 World Para Swimming Championships in Mexico City with her heat swim, Regiane Silva converted it into victory in the women’s 100m backstroke with 87.12.

S12 swimmer Raquel Viel was second with 83.09 and Emyly Santos Silva third with 81.43.

Regiane Silva took her second victory of the day in the women’s 400m freestyle with 89.02.

Cecilia Araujo followed her with 88.21 while Laila Suzigan Garcia was third with 97.15.

Italo Pereira won his final after a World Championship-qualifying performance in the men’s 100m backstroke preliminaries.

Pereira registered 94.37 to take the win in front of team-mates Andrey Pereira Garbe, second with 94.03, and S10 world champion Andre Brasil, third with 93.51.

Mariana Gesteiro Ribeiro led the women’s 50m freestyle with 94.94, this time claiming victory ahead of Araujo, who had won the 100m freestyle yesterday, with 94.88.

Joana Neves was third with 93.19.

Brazil’s Caio Amorim Muniz De Oliveira triumphed in the men’s 400m freestyle with 95.80.

Toronto 2015 Parapan American Games champion Facundo Arregui of Argentina was second with 95.46.

Brazil’s Matheus Rheine completed the podium with 91.32.

Rounding off a superb day for Brazil was Talisson Glock’s win in the men’s 200m individual medley with 92.62.

Glock was joined on the podium by countrymen Lucas Lamente Mozela, second with 92.38, and Thomaz Rocha Matera, third with 91.06.

Brazilian coach Leonardo Tomasello was pleased with his team’s performance in their opening major meet of 2017, which saw 13 athletes qualify for the World Championships that are scheduled to take place from September 30 to October 6.

"It was surprising because it is the first competition of the year and we are still in April," he said.

"Many of them will still reach their peaks but have already swam that fast.

"It was really encouraging."

There was a podium double for Canada in the women’s 200m individual medley.

Samantha Ryan and Amber Thomas came first and third respectively with percentages of 86.77 and 81.63.

Brazil’s Debora Borges Carneiro came second with 82.66.

The next leg of the World Series is due to be held in English city Sheffield from April 27 to 30.

American city Indianapolis will then host an event from June 9 to 11, followed by Germany’s capital Berlin from July 6 to 9.