Katie Hoff checks the result after the Women's 400m Individual Medley at the U.S. Olympic Swimming Trials in Omaha of the United States, June 29, 2008. Hoff won the title and set a new world record with 4 minutes and 31.12 seconds.(Xinhua Photo)
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Michael Phelps swims in the Men's 400m Individual Medley at the U.S. Olympic Swimming Trials in Omaha of the United States, June 29, 2008. Phelps won the title and set a new world record with 4 minutes and 5.25 seconds.(Xinhua Photo)