28 July, 2017
Wednesday marked three years to the day since his first major championship title, at the 2014 Commonwealth Games in Glasgow, and Peaty marked the anniversary by adding the 50 metres breaststroke world gold to the 100m he won on Monday.
Peaty had other ideas however, romping to a scarcely-believable 25.95 in the semi-final - achieving a time few thought was even possible eight hours earlier, almost half a second under Peaty's world best before the meet.
This week's world-record-setting victory over Efimova, who came in third behind King and second-place American Katie Meili, vaulted King to global headlines yet again. "I wasn't even up for it that much so it is insane", Peaty said. I thought I was going to go slower because I was a little bit less energetic.
"I'm feeling very good. I'm going to be focusing now, staying neutral and see what we get tomorrow". "I just kind of have to work through the prelims as easy as I can to keep myself rested".
But Project 25 is completed as the Briton shattered his own world record in the 50m breast yesterday, lowering it from 26.42 seconds to 26.10 in the heats, then 25.95 in the semi-finals of the World Championships in Budapest.
Cameron van der Burgh of South Africa was third, eight hundreths of a second behind the Brazilian.More news: Trump Administration's Guest Worker Boost Comes Too Late, Some Small Businesses Say
"But I think it's really impressive". You have to have a lot of power to swim it and it suits him perfectly to his strokes.
He narrowly failed to beat his own 100m world record of 57.13sec from last year's Olympic final in Rio, but still won gold on Monday with a championship record of 57.47sec.
Not that the result was ever in question. The double was really never in doubt; Peaty knew it and so did his challengers.
And BBC pundit Rebecca Adlington, a two-time Olympic champion in the pool, reckons knowing he had another important swim to come may have stopped him breaking his world record again.
Earlier, Britain came a disappointing fifth in the mixed 4x100m medley relay after they posted in the final a pedestrian time of three minutes 41.56secs, as the United States took the win in a world record time of 3:38.56.