The Canadian star challenged the all-time mark in the women's 200-meter butterfly and continued her perfect string of races in Singapore.

Australian Kaylee McKeown, who won every backstroke title at the last two Olympics and at the 2023 Worlds, opted not to swim the 50m this year. She owns the world record of 26.86.

Summer McIntosh came within a whisker of breaking a long-standing world record, and Leon Marchand failed to improve on a new mark he set just a night earlier, but both young guns won gold medals at the world championships in Singapore on Thursday.