Keanna Macinnes, with a Scottish record in the 200m butterfly, and Freya Colbert, with a meet mark in the 200m freestyle, were the first and only two British swimmers to race inside target times for a ticket to World Championships on the opening night of action at the Aquatics GB Swimming Championships in London's 2012 Olympic pool.

Good for them. But first up, let's celebrate James Guy.

Stalwart of Great Britain relays for more than a decade as a many and the most medalled member of Britain quartets at all international levels available to him, put his Olympic-champion spirit on show in the 400m freestyle with a 3:46.64 victory. 

That's quite something, 10 years on and back on top of the British 400m podium. He hadn't raced the 400 at nationals since 2018.

Guy was 19 back in 2015 when he took silver in the 400m freestyle in what remains the British record, of 3:43.75. The man ahead of him was a year beyond being caught with banned substances in his body on the way to a second offence in 2018 that removed him from the sport for four years and three months: China's Sun Yang*. Germany's Paul Biedermann, the World record holder from Rome 2009 finished third in what was  one of the finest performances of his career.

Days later at 2015 World titles, Guy shared the podium with the same wo men in the 200m - but this time, it was the Brit who grabbed gold, his 1:45.14 keeping Sun at bay by 0.06, Biedermann, the World record holder in that event, too, from Rome 2009, third in 1:45.38.

Since Sun locked Guy out of the medals at Rio 2016 between doping offences, the British ace has never been in quite the same solo-strength position. It's not easy overcoming the sense that you've been cheated out of just rewards, yet Guy survived that test with flying colours and a passion for producing the goods when national-team relay honours are at stake. 

In this latest chapter of his career, Guy is coached by Ryan Livingstone alongside fellow 4x200 golden quartet member Matt Richards, the 2023 World champion and Olympic silver medallist in the 200, at the Manchester Performance Centre.

Guy will go down in history as one of the all-time great team players in any sport, even if many don't regard swimming in that way. Two counts: 

• 1. With Tom Dean, Matt Richards and Duncan Scott, Guy is a member of the first precise-same quartet in all swimming relays in Olympic history, back to 1896 - all time, all relays, men and women -  to retain an Olympic title. The 4x200m free finals in Tokyo and Paris are joined by the Fukuoka 20213 World title claimed by the same men in the top three fastest all-time 4x200m performances ever in textile suits.
• 2. Guy's L/C GBR Relay Pantheon:
  Olympics: 3 Golds, 3 Silvers
  World: 4 Golds; 1 Silver; 3 Bronzes
  Europeans: 7 Golds, 2 Silvers

Enough said. Today he's a British 400m champion once more. Bravo, James Guy!

• RESULTS IN FULL

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Watch Adam Peaty's Take in the BBC's Coverage - Day 1: