"French Swimmer Leon Marchand Shatters Michael Phelps' Last World Record"

French swimmer Leon Marchand, 21, shattered Michael Phelps' last remaining world record in the 400 meters individual medley at the World Aquatics Championships in Fukoka, Japan. Marchand completed the race in 4:02.50, beating Phelps' previous mark by 1.34 seconds. He was under Phelps' world record pace throughout the swim and secured his third gold medal at the championships. In the women's 400 meter freestyle, Australia's Ariarne Titmus set a world record with a time of 3:55.38, defeating Katie Ledecky.