Gretchen Walsh of the United States in action during the...

Gretchen Walsh of the United States in action during the 100-meter butterfly semifinal at the World Short Course Swimming Championships in Budapest, Hungary, Friday, Dec. 13, 2024. Credit: AP/Denes Erdos

BUDAPEST, Hungary — American swimmer Gretchen Walsh set three more world records on Friday at the world short course championships.

She lowered the 100-meter individual medley time to 55.11 seconds in the final, and the 100 butterfly record twice.

In the morning heats, Walsh broke Canadian Margaret Mac Neil's mark of 54.05 from 2022 to 53.24. Then she dropped it again in the evening semifinals to 52.87.

Walsh has seven world records in Duna Arena this week.

The U.S. men's 4x200 relay team achieved two world records in the same final.

The team clocked a winning 6:40.51, slashing nearly four seconds off its own record from the last championships in 2022 in Melbourne, Australia.

Also, Luke Hobson on the lead-off leg set the individual 200 freestyle world record that Peter Biedermann of Germany held since 2009.

Gretchen Walsh of the U.S. reacts after competing in the...

Gretchen Walsh of the U.S. reacts after competing in the Women's 100m Butterfly Heats on day four of the World Short Course Swimming Championships in Budapest, Hungary, Friday, Dec. 13, 2024. Credit: AP/Denes Erdos

Americans also claimed the day's other world records: Regan Smith won the women's 50 backstroke final in a world record time of 25.23, and Kate Douglass improved her own world record in the 200 breaststroke from October to 2:12.50.

The 25-meter pool is half the length of an Olympic pool.

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