Kentucky Derby 2013

Joel Rosario, aboard Orb, reacts after winning the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Joel Rosario rides Orb during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Joel Rosario rides Orb to victory during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator slides on a rain-soaked tarp before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Actress Krysten Ritter arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Country singer Luke Bryan arrives with his wife, Caroline, to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Actress Jennifer Tilly poses as she arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator slides on a rain-soaked tarp before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Raindrops cover a metal seat at Churchill Downs before the 139th Kentucky Derby May 4, 2013, in Louisville, Ky.

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.

Spectators wait in the rain for the next race before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator arrives with her fancy hat during the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Brenda Williams, from Tulsa, Okla., waits in the rain for the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Spectators arrive with fancy hats to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Miss America 2013 Mallory Hagan arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Model and television personality Bonnie Jill Laflin arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator arrives with her fancy hat to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

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.

Author Nora Roberts arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Former professional baseball player Ken Griffey Jr. arrives to attend the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

A spectator walks through the paddock area in the rain before the 139th Kentucky Derby at Churchill Downs May 4, 2013, in Louisville, Ky.

Spectators walk through security checks before entering Churchill Downs during the 139th Kentucky Derby May 4, 2013, in Louisville, Ky.

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.

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.

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.

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.

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.

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.