French swimmer Léon Marchand set a new world record in the 200-meter individual medley at the World Swimming Championships in Singapore. He achieved a time of 1 minute 52.69 seconds during the semifinals on July 30, 2025, breaking the previous record of 1 minute 54.00 seconds held by American Ryan Lochte since 2011. Marchand, 23, had announced his intention to break the record prior to the event and succeeded without waiting for the final. The following day, he secured his third world championship title in the 200-meter individual medley with a winning time of 1 minute 53.68 seconds, finishing ahead of competitors Shaine Casas and Hubert Kos. This victory marked Marchand's sixth individual world title. The French Swimming Federation continues to seek the broader impact of Marchand's achievements on the sport.