135th Kentucky Derby

Mine That Bird trainer Bennie Woolley and jockey Calvin Borel celebrate after winning the 135th Kentucky Derby on Saturday.   (Rob Carr / Associated Press)

Owner Rick Porter holds up a plaque commemorating his filly Eight Belles, who had to be euthanized at Churchill Downs last year after finishing second in the 134th Kentucky Derby. Eight Belles broke both of her front legs.   (Darron Cummings / Associated Press)

Kris Jenner and daughter Kim Kardashian strike a pose as they arrive Saturday at Churchill Downs for the running of the 135th Kentucky Derby.   (Brian Bohannon / Associated Press)

Horse racing fans arrive in old-fashioned formal wear before the running of the 135th Kentucky Derby on Saturday in Louisville.   (Jamie Squire / Getty Images)

A vendor sells mint juleps on Saturday before the running of the 135th Kentucky Derby in Louisville.   (Charlie Riedel / Associated Press)

Race car driver Danica Patrick poses for the photographers during her arrival at Churchill Downs on Saturday.  (Gail Kamenish / Associated Press)

Comedian/actor Andy Samberg makes a dapper arrival at Churchill Downs on Saturday.  (Brian Bohannon / Associated Press)

Actress Valerie Bertinelli shows off her slimmed-down figure during her arrival Saturday for the 135th Kentucky Derby.   (Brian Bohannon / Associated Press)

Singer Nick Lachey mingles with racing fans on Saturday as he arrives for the 135th Kentucky Derby at Churchill Downs.   (Jeff Gentner / Getty Images)

LeeAnn Rimes, who sang the national anthem, arrives before the festivites Saturday for the 135th Kentucky Derby.   (Brian Bohannon / Associated Press)

Singer Joey Fatone makes an exuberant arrival Saturday at the 135th Kentucky Derby.  (Gail Kamenish / Associated Press)

Mary Wilson of the Supremes makes a lyrical entrance as she arrives at the 135th Kentucky Derby on Saturday.   (Gail Kamenish / Associated Press)

Kid Rock stops to take a photograph with a fan as he arrives Saturday at Churchill Downs for the 135th Kentucky Derby.   (Jeff Gentner / Getty Images)

A race fan gets into the Kentucky Derby spirit on Saturday at Churchill Downs.   (Matthew Stockman / Getty Images)

Jockey Robby Albarado is a little worse for the wear after riding Ide Like a Double in the 75th Churchill Downs race on Saturday.  (Jamie Squire / Getty Images)

Kristine Sy of Moorehead, Ky., and Katie Anderson, Orlando, Fla., bounce around on inflatable horses at Churchill Downs before the running of the 135th Kentucky Derby on Saturday.   (Joe Imel / Associated Press)