Three-time Olympic champion Walsh Jennings and her team mate helped their chances of qualifying for the Games after emerging top of Pool B, upsetting reigning world champions Sarah Pavan and Melissa Humana-Paredes of Canada in their final match 21-18, 21-16.

Walsh Jennings and Sweat currently have 6,960 points and will need to be in the top 15 in the Olympic rankings when they close on June 13.

The pair are fifth in these rankings behind compatriots Alix Klineman and April Ross in second.

With a maximum of two spots per country at the Games, Walsh Jennings and Sweat are ahead of their closest challengers for the Olympic spot - Kelly Claes and Sarah Sponcil, who have 6,800.

"We want to qualify, we want to leave Cancun with a lot of points," said Walsh Jennings.

"But it’s step by step, we got to keep doing it. 

"The qualification period is coming to its end and now it only depends on us. 

"We have to play with a lot of heart and be steady and play together and we’ll be fine."

Claes and Sponsil also progressed after they upset Brazilians Agatha Bednarczuk and Eduarda Lisboa, who won the second four-star tournament in the Cancun hub, with a 22-20, 21-11 victory.

Australia's Taliqua Clancy and Mariafe Artacho del Solar, Brazil's Talita Antunes and Taiana Lima and the Dutch pairings of Marleen van Iersel and Pleun Ypma, and Sanne Keizer and Madelein Meppelink, won their respective pools.

Russia’s Nadezda Makroguzova and Svetlana Kholomina, and the Czech Republic's Marketa Slukova and Barbora Hermannova also won their pools.

In the men's tournament, The Netherlands' Stefan Boermans and Yorick De Groot finished top of their group with a 24-22, 21-13 victory over Poland’s Grzegorz Fijalek and Michal Bryl, before defeating Canada’s Sam Pedlow and Sam Schachter 20-22, 21-18, 15-13.

Their compatriots Christiaan Varenhorst and Steven van de Velde also finished top of their pool, but Russians Konstantin Semenov and Ilya Leshukov denied a third Dutch winner after defeating Rio 2016 bronze medallists Alexander Brouwer and Robert Meeuwsen 21-15, 21-16.

The other pool winners were Brazil's Alison Cerutti and Alvaro Filho, the United States' Jake Gibb and Taylor Crabb and Phil Dalhausser and Nick Lucena, Poland's Piotr Kantor and Bartosz Losiak and Italy's Adrian Carambula and Enrico Rossi.