Leon Marchand Shatters Michael Phelps' Last World Record in Dominant Performance

Leon Marchand of France broke Michael Phelps' last remaining individual world record in the 400m individual medley at the world swimming championships, while Australian Ariarne Titmus won the 400m freestyle, breaking the world record and defeating Katie Ledecky. Marchand, who trains under Phelps' coach Bob Bowman, clocked 4:02.50, surpassing Phelps' record of 4:03.84 set in 2008. Titmus won with a time of 3:55.38, beating Ledecky and Summer McIntosh. Australia dominated the competition, winning four out of five finals.