The 21-year-old, who was the world record holder entering the Games, set a Paralympic record of 1min 1.65sec as he powered his way to the gold medal.

Mozgovoi did not get the fastest start, turning in fifth position, but came through in the closing 50 metres, beating Bealrus' Yahor Shchalkanau by 0.31 seconds.

Timothy Hodge of Australia took bronze.

Mozgovoi, who was born and is still based in Ufa in the Republic of Bashkortostan, qualified second fastest behind Shchalkanau.

He shaved exactly one second off his time in the heats to leapfrog Shchalkanau in the final.

The world record holder set the fastest ever time at the delayed 2021 European Para Swimming Championships in Madeira in Portugal earlier this year. 

His 1:01.68 swim was enough to take gold - his second of the Championships alongside victory in the 4x100m medley relay 34 points.

In those Championships, he also won bronze in the 50m freestyle S9 and 100m freestyle S9.

In the 2019 World Para Swimming Championships in London, Mozgovoi won gold in the 4x100m medley relay 34 points - his second world title in the event after the Russian team won in 2015 in Glasgow - and bronze in the 100m freestyle S9.

In 2017, he received the title of Honoured Master of Sport in the Russian Federation.

He was also one of three winners of the Sport Without Frontiers prize at the 2013 and 2014 Youth of the Nation Awards in the region of Bashkortostan.