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U.S. Olympic swim trials

  • Michael Phelps competes in the championship final of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
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    Michael Phelps competes in the championship final of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

    Michael Phelps competes in the championship final of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
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  • Anthony Ervin dives off of the starting block at the start of the championship final of the Men's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
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    Anthony Ervin dives off of the starting block at the start of the championship final of the Men's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

    Anthony Ervin dives off of the starting block at the start of the championship final of the Men's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
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  • Dara Torres celebrates after she competed in the second semi final heat of the Women's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
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    Dara Torres celebrates after she competed in the second semi final heat of the Women's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

    Dara Torres celebrates after she competed in the second semi final heat of the Women's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
    Getty Images
  • Elizabeth Pelton competes in preliminary heat 18 of the Women's 200 m Backstroke during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
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    Elizabeth Pelton competes in preliminary heat 18 of the Women's 200 m Backstroke during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)

    Elizabeth Pelton competes in preliminary heat 18 of the Women's 200 m Backstroke during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
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  • Michael Phelps (C) dives of off the starting block as he competes in preliminary heat 13 of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
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    Michael Phelps (C) dives of off the starting block as he competes in preliminary heat 13 of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)

    Michael Phelps (C) dives of off the starting block as he competes in preliminary heat 13 of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
    Getty Images
  • Ryan Lochte, left, and Michael Phelps look at the time after finishing in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
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    swim

    Ryan Lochte, left, and Michael Phelps look at the time after finishing in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
  • Ryan Lochte swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
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    swim

    Ryan Lochte swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
  • Michael Phelps swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
    8/10

    swim

    Michael Phelps swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
  • Ryan Lochte, right, and Michael Phelps compete in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
    9/10

    swim

    Ryan Lochte, right, and Michael Phelps compete in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
  • Brendan Hansen, left, and Michael Phelps swim in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
    10/10

    swim

    Brendan Hansen, left, and Michael Phelps swim in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
Michael Phelps competes in the championship final of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
Anthony Ervin dives off of the starting block at the start of the championship final of the Men's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
Dara Torres celebrates after she competed in the second semi final heat of the Women's 50 m Freestyle during Day Seven of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on July 1, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
Elizabeth Pelton competes in preliminary heat 18 of the Women's 200 m Backstroke during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Jamie Squire/Getty Images)
Michael Phelps (C) dives of off the starting block as he competes in preliminary heat 13 of the Men's 100 m Butterfly during Day Six of the 2012 U.S. Olympic Swimming Team Trials at CenturyLink Center on June 30, 2012 in Omaha, Nebraska. (Photo by Al Bello/Getty Images)
Ryan Lochte, left, and Michael Phelps look at the time after finishing in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
Ryan Lochte swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
Michael Phelps swims in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/Mark Humphrey)
Ryan Lochte, right, and Michael Phelps compete in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)
Brendan Hansen, left, and Michael Phelps swim in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb. (AP Photo/David Phillip)

Athletes compete for a place on the U.S. swimming team at the 2012 Olympic games in London.