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Rio 2016: U.S. Swimmer Katie Ledecky Is in a League of Her Own
Catch up with NBC News Clone on today's hot topic: Mmvo42707013622 - Breaking News | NBC News Clone. Our editorial team reformatted this story for clarity and speed.
A virtual unknown in 2012, Katie Ledecky is now one of the most dominant female swimmers in the world. She’s already won a gold medal — and smashed her own world record.
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