Adam Peaty added to his medal haul at the World Aquatics Championships in Gwangju, South Korea, by winning gold in the 50 metres breaststroke.
The Briton had already topped the podium in the 100m on Monday and claimed his third 50m-100m double at the World Championships, with a time of 26.06sec.
He finished 0.6 of a second faster than Felipe Lima, while another Brazilian, Joao Gomes, took bronze in 26.69.
The 24-year-old might have been hoping to beat his own 50m world record of 25.95, which he set in 2017 in Budapest, but fell just short.
Peaty, who won Great Britain’s first gold medal at the Rio Olympics three years ago, said he was so focused on his races he did not even realise he had become the first swimmer to win six breaststroke world titles.
He said: “I didn’t know that, that’s pretty cool. I think for me, because I am in such a performance mindset, my emotion just stays neutral. I think in my reflection process in the next couple of weeks when I go home that’s when it will start to sink in.”
Peaty had said before the championships he was not immune to defeat but at the very least he is building up a resistance to it.
Unbeaten in the 100m at major championships in the past five years, the only blot on his resume over that period is a 50m silver at last year’s Commonwealth Games in Australia.
The swimmer had made it his mission to become the first to go under the ‘Magic 57’ mark in the 100 and he achieved that feat with a 56.88.
“Got the triple double which is a massive thing for me,” Peaty said. “It’s what I came here to do. The 56 happened so it’s just everything complete really.”
Peaty also helped Britain to a bronze medal in the mixed 4x100m medley relay, which Australia won with the United States in second. The British quartet included Georgia Davies, James Guy and Freya Anderson.