Katie Ledecky celebrates after setting a world record of 3:58.86 in the womens 400m freestyle at the 2014 USA National Championships at William Woollett Jr. Aquatics Complex. Kirby Lee-USA TODAY ... more 
Katie Ledecky celebrates after setting a world record of 3:58.86 in the womens 400m freestyle at the 2014 USA National Championships at William Woollett Jr. Aquatics Complex. Kirby Lee-USA TODAY Sports less 
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Thu, Aug 21, 2014 9:15 AM EDT