John Velazquez rides Always Dreaming to victory in the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Morry Gash)
John Velazquez rides Always Dreaming to victory in the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Morry Gash)
John Velazquez rides Always Dreaming to victory in the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Garry Jones)
A woman wearing a hat walks up some stairs before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A horse walks on a muddy track before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A fan looks over a program before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
Ariana Muth smiles before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
A man stands near a puddle before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
Fans arrive for the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
Some jockeys walk through the paddock in a race before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
A woman wears a fancy hat before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
Fans smoke cigars before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
Fans wait for the start of the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/John Minchillo)
A woman wears a fancy hat before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Matt Slocum)
A man picks up his mint julep before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A horse walks on a muddy track before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A woman wears a hat before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A woman looks at her phone before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
Horses walk on a muddy track before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)
A horse runs in the mud after a race before the 143rd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2017, in Louisville, Ky. (AP Photo/Charlie Riedel)