Image source, Getty Images
Summer McIntosh holds world records successful nan 200 and 400m individual medley events arsenic good arsenic nan 400m freestyle
Michael Emons
BBC Sport journalist
Canada's Summer McIntosh took golden successful nan women's 400m freestyle arena astatine nan World Aquatics Championships successful Singapore arsenic American Katie Ledecky vanished pinch nan bronze.
The arena was seen arsenic a conflict betwixt 18-year-old McIntosh - who has 3 Olympic golden medals - and 28-year-old nine-time Olympic champion Ledecky.
However, McIntosh led from nan commencement to triumph successful 3 minutes 56 seconds, pinch China's Li Bingjie 2nd and Ledecky 2.23secs down nan leader.
McIntosh has a chance to subordinate Michael Phelps arsenic nan only swimmer to triumph 5 individual titles astatine a azygous world championships arsenic she is besides group to title successful nan 400m and 200m individual medley, 200m butterfly and 800m freestyle.
Speaking to Canadian broadcaster CBC, nan teen said: "It's amazing, time 1 is astir apt my biggest time successful nan meet.
"That 400m freestyle, I was truthful successful power that full title and ace strong. Overall I felt I had nan endurance. I'm conscionable trying to return it 1 title astatine a clip and time by day."
Ben Proud hit his ain British grounds arsenic he recorded a clip of 22.74secs to decorativeness 2nd successful his semi-final, down Switzerland's Noe Ponti, to scope nan men's 50m butterfly final.
Britain's Jordan Houlden came 4th successful men's 1m springboard diving event, while Noah Penman vanished 17th retired of 59 divers successful nan preliminary information connected his maiden elder world championships appearance.