Adam Peaty smashed his own 100 metres breaststroke world record to win gold at the European Championships in Scotland.
The 23-year-old retained the title he won in London two years ago by clocking 57.00 seconds to finish ahead of Glasgow-born James Wilby.
Peaty's previous world record was 57.13secs - a time he achieved when winning Olympic gold at Rio 2016 - and he was just one hundredth of a second from achieving his long-held 'Project 56' goal of going sub-57secs.
The Briton has won every significant breaststroke title over 100m but was surprisingly beaten over 50m in the Commonwealth Games final earlier this year.
"Oh my god, I cannot believe that," Peaty told the BBC after his European Championships victory.
"Sometimes you've got to have a bad race to realise how much you love the sport and how much it means to you. I keep saying this, at the Commonwealths, I learned a big lesson - I was too tense, I just wasn't me.
"Going out there tonight, [coach]Mel [Marshall] just said, 'Enjoy it, you're ready.' I was not targeting a world record at all. It means I'm in good shape. It's about two years time in Tokyo."