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Michael Phelps caps off a great day for US in the pool
1:03 | si wire: rio
Michael Phelps caps off a great day for US in the pool
Monday August 8th, 2016

American swimmer Katie Ledecky took home gold in the 400-meter freestyle on Sunday night, and shattered her own world record in the process.

The 19-year-old finished her four laps in 3:56:46, topping her then-record time of 3:58:37 at the 2014 Pan Pacific Championships by nearly two seconds.  

Ledecky already had a silver medal to her name, placing second in Saturday’s 4x100-meter freestyle relay. She will race again on Monday afternoon in the 200-meter freestyle heats, and in the heats for the 800-meter free on Thursday.

The gold is the first for the United States this year in swimming.

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