Katie Ledecky ties Michael Phelps' record with 20th world swimming title as Australians Mollie O'Callaghan and Kaylee McKeown break records

Katie Ledecky won the 1500m freestyle to tie Michael Phelps with 15 career individual world titles.
Mollie O'Callaghan broke the 14-year-old 200m freestyle world record previously held by Federica Pellegrini.
Kaylee McKeown took gold in the 50m and 100m backstroke events.
Léon Marchand earned France three gold medals in the 200m butterfly, 200m individual medley, and 400m individual medley.
year-old Canadian Summer McIntosh won the 200m butterfly and took bronze in the 200m freestyle.