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Olympic Update: 8/6
1:24
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Katie Ledecky is very fast. Although she couldn't outpace the Australians as the anchor in the 4x100 relay on Saturday, Ledecky paced herself well on Sunday in the 400-meter freestyle, just missing her own world record and setting an Olympic record with her 3:58.71 time.
When she found out after the race how close she was to breaking the world record, the young American was incredibly hard on herself.
"My last stroke was a little lackadaisical.