Joseph Schooling claimed Singapore's first ever Olympic gold medal here tonight on an evening in which two of the great swimmers of Rio 2016 finally faltered - and the third triumphed like never before.
Chinese swimmer Chen Xinyi has become the first athlete to fail an in-competition drugs test at the Olympic Games after testing positive following a fourth place finish in the women's 100 metres butterfly final.
Simone Manuel and Penny Oleksiak tied for gold in the women's 100 metres freestyle on another enthralling night of swimming action also topped by a 22nd Olympic gold medal for the irrepressible Michael Phelps.
Teenager Kyle Chalmers sensationally claimed Australia's first 100 metres freestyle Olympic title for nearly half-a-century tonight as his room-mate - and pre-race favourite - Cameron McEvoy finished seventh.
Michael Phelps may already have been the greatest swimmer of all time but his performances - and celebrations - here tonight showed once again how he is surely the most ferocious competitior ever to grace the Olympic stage.
King beats Efimova to 100m breaststroke Olympic gold and takes dig at rival by claiming it is "incredible" to win clean
Lilly King beat controversial Russian Yuliya Efimova in the Olympic 100 metres breaststroke final here to claim victory for United States, and, some would say, for clean sport on another night where the sport's problems with doping were never far from the surface.
Russia's Yuliya Efimova was greeted with boos and whistles, as well as sledging from her main rival, as she made her first appearance at an Olympic Games many believe she should have been banned from after failing two drugs tests.
Sweden's Sarah Sjöström, Britain's Adam Peaty and United States' Katie Ledecky each broke world records in the pool before Michael Phelps brought the curtain down on a thrilling night of swimming action by helping his team to a 4x100 metres freestyle relay gold medal.
Hungary's Katinka Hosszu produced one of the great Olympic swimming performances to shatter a four-year-old world record by over two seconds in the 400 metres individual medley final here this evening.
The US record of five consecutive wins in the men’s 400m individual medley is under extreme pressure from the Japanese pair of Kosuke Hagino and Daiya Seto as the Rio 2016 swimming programme gets underway tomorrow.
Australian swimming coach Forbes Carlile has died at the age of 95.
Nikita Lobintsev and Vladimir Morozov are expected to be cleared by the International Swimming Federation (FINA) to compete at the Olympic Games as the ban on Russians barred from taking part at Rio 2016 because of their links to the McLaren Report begins to crack.
Controversial swimming coach Scott Volkers will be part of the Brazilian national team’s pre-Olympic training camp despite being barred from Rio 2016.
Italy’s Martina Grimaldi claimed the gold medal in the women’s 25 kilometres event on the final day of action at the European Open Water Swimming Championships in Hoorn.
Italy’s Rachele Bruni, Simone Ruffini, and Federico Vanelli combined to claim the five-kilometres team event title at the European Open Water Swimming Championships in Hoorn today.