Note: Single-source report; awaiting corroboration.
Leon Marchand broke the world record in the 200m Individual Medley during the semifinals at the Singapore 2025 World Aquatics Championships, finishing in 1:52.69. This time surpassed Ryan Lochte's 14-year-old record by 1.31 seconds.
According to the official World Aquatics channel, Marchand's swim is considered one of the standout performances of the 2025 championships, underscoring his dominance in the event.