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O’Callaghan Tops 100m Heats, McIntosh Wins Third Gold at Singapore Worlds

Dominant individual swims paired with unexpected relay outcomes have reshaped the medal standings in Singapore

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Swimming - World Aquatics Championships - Women 200m Freestyle - Finals - World Aquatics Championships Arena, Singapore - July 30, 2025 Australia's Mollie O'Callaghan in action during the final REUTERS/Hollie Adams
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Overview

  • Mollie O’Callaghan clocked the fastest time in the women’s 100m freestyle heats (53.40 seconds) as she aims to complete a sprint double after winning the 200m freestyle title.
  • Summer McIntosh captured her third gold medal in the 200m butterfly with a 2:01.99 finish, posting the second-fastest swim in history and staying on course for five individual victories.
  • Neutral Russian athletes set a meet-record 3:37.97 to win the mixed 4×100m medley relay while Canada claimed bronze in 3:40.90 for its fifth medal in Singapore.
  • A wave of illness disrupted competition, leading to withdrawals by U.S. sprinter Gretchen Walsh, Italy’s Nicolo Martinenghi and Australia’s Sam Short.
  • French star Leon Marchand advanced to the men’s 200m individual medley final after breaking Ryan Lochte’s 2011 world record with a semifinal time of 1:52.69.