World Para Swimming World Series champion Daniel Dias of Brazil will open his season in Sao Paulo ©Getty Images

Daniel Dias and Louise Fiddes, the reigning men’s and women’s World Para Swimming World Series champions, will be in action from tomorrow as they participate in simultaneous World Series events in their home countries.

Brazil’s most decorated Paralympian will swim in the competition that runs in Sao Paulo until April 27, while Britain’s Fiddes will swim Glasgow’s version that continues until April 28.

As far as Sao Paulo is concerned, it will be the third successive year that the Brazilian Paralympic Training Centre stages a World Series event.

Around 250 swimmers from 16 countries are expected to compete.

“It is my seasonal debut and also a very important competition since it gives us the opportunity to achieve the marks for 2019’s main events, the Parapans and the World Championships,” said Dias.

“I am confident I can gain a place to represent my country again.”

China’s three-time Paralympic champion Bozun Yang and Cuba’s Rio 2016 gold medallist Lorenzo Perez Escalona stand out among the international swimmers.

The centre opened its doors in 2016 and is a major infrastructural legacy of the Paralympic Games.

Britain's Louise Fiddes,18, the World Para Swimming World Series champion, will start her defence of the title in Glasgow tomorrow ©Getty Images
Britain's Louise Fiddes,18, the World Para Swimming World Series champion, will start her defence of the title in Glasgow tomorrow ©Getty Images

Dias added: “Having such a great facility in Brazil enables us to avoid long trips and makes it easier to set up our season schedule.”

With so many experienced and multiple-Paralympic champions competing, few expected teenage swimmer Fiddes to take the 2018 World Series title.

The 18-year-old now faces the challenge of repeating that performance as she makes her seasonal bow in Glasgow.

British spectators will be hopeful of celebrating further success through four-time Paralympic champion Bethany Firth and London 2012 gold medallist Jessica-Jane Applegate.

The World Series champion from 2017 – Monica Boggioni of Italy – will also be in attendance, hoping a good performance can start her bid to regain the title.

Other top names competing include Canada’s Paralympic champion Aurelie Rivard, Spain’s Sarai Gascon and Ireland’s Ellen Keane.

All athletes' results at each World Series edition are calculated using a standardised World Para Swimming points system via an online virtual competition platform.

This ensures that the overall World Series winner will be the best performing athlete over the duration of the series, meaning every performance counts.