Katinka Hosszu will compete in the new FINA events despite being one of three athletes suing the governing body ©Getty Images

International Swimming Federation’s (FINA) have claimed top swimmers are backing their new Champions Swim Series after several leading names confirmed their participation.

The governing body last month announced China, Hungary and the United States would stage competitions as part of the three-event series.

it is viewed by many as a direct response from FINA to criticism from athletes who were allegedly barred from taking part in new International Swimming League (ISL) competitions.

The ISL has accused FINA of "copying the ISL's team competition model in a further FINA effort to quash competition that benefits swimmers and fans alike".

FINA revealed that 45 men from 15 nations and 37 women from 17 countries have been invited to take part, with a total prize purse of nearly $4 million (£3 million/€3.5 million) available.

Events will feature direct finals with four athletes in each and all races will be swum in a 50 metres pool, with Olympic, world, world record holders and the top ranked athletes assured of invitations.

Hungary’s Katinka Hosszu is among the top swimmers who have confirmed their participation.

The three-time Olympic champion is one of three leading swimmers currently suing FINA over allegedly violating US antitrust laws, following the governing body’s opposition to an ISL event in Turin in December.

Hosszu appears set to compete in FINA’s new series, despite the ongoing case,

Britain’s Adam Peaty was among a group of swimmers at an ISL summit in London during December, which included Hosszu, who criticised FINA and discussed potentially founding an association for swimmers.

Peaty will not compete in the FINA Champions Swim Series because he is focusing on preparing for the World Championships in Gwangju in July. 

The Briton, however, declared the series was "definitely a step in the right direction for the sport".

FINA have announced men’s 50 metres freestyle Olympic champion Anthony Ervin of the United States will compete.

Russia’s Kliment Kolesnikov and Vladimir Morozov will compete in backstroke events, along with the United States’ Ryan Murphy and China’s Xu Jiayu.

Britain’s Ben Proud, Brazil’s Nicholas Santos and Ukraine’s Andriy Govorov are among the swimmers set to contest the men’s 50m butterfly, while South African star Chad Le Clos will contest the 100m event.

Denmark’s Pernille Blume and Sarah Sjostrom, the reigning Olympic and world champions in the women’s 50m events are also confirmed to be competing.

The duo could face competition from The Netherlands’ Ranomi Kromowidjojo.

Canada’s Olympic champion Penny Oleksiak is expected to battle Australia’s Cate Campbell in the women’s 100m freestyle.

Guangzhou is scheduled host the opening event on April 27 and 28.

Hungary’s capital Budapest, which hosted last year's World Championships, will stage the second event on May 11 to 12.

Indianapolis will round off the series when the American city hosts competition on May 31 and June 1.