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Joel Rosario, aboard Orb, reacts after winning the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Joel Rosario rides Orb during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Joel Rosario rides Orb to victory during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator slides on a rain-soaked tarp before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Actress Krysten Ritter arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Country singer Luke Bryan arrives with his wife, Caroline, to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Actress Jennifer Tilly poses as she arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator slides on a rain-soaked tarp before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Raindrops cover a metal seat at Churchill Downs before the 139th Kentucky Derby May 4, 2013, in Louisville, Ky.
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From left, Amanda Dugan, Bernadette Osborne and Tracy Clay watch the fourth race before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Spectators wait in the rain for the next race before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Brenda Williams, from Tulsa, Okla., waits in the rain for the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
AP Photo
A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Spectators arrive with fancy hats to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Miss America 2013 Mallory Hagan arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Model and television personality Bonnie Jill Laflin arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Former NBA player and coach Avery Johnson arrives with his wife Cassandra to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Author Nora Roberts arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Former professional baseball player Ken Griffey Jr. arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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A spectator walks through the paddock area in the rain before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Spectators walk through security checks before entering Churchill Downs during the 139th Kentucky Derby May 4, 2013, in Louisville, Ky.
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Spectators sit out in the rain while waiting for the next race before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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James Cowherd, center, from Las Vegas, poses for photos with other spectators before the running of the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Desirae Masterson, from Indianapolis, with her hat covered in a plastic bag to protect it from the rain, shares a mint julep with her husband Ray before the running of the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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James Cowheard, from Las Vegas, shows off his fancy shoes before the running of the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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Jinny Keen, from Louisville, Ky., wears a handmade hat, celebrating her 44th Derby appearance before the running of the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
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From left, Donna Osborne, from Clemens, N.C., waits in the rain with Annie and Oz before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.
