Sean Knipping, of Toronto, walks through the stables dressed in a horse costume during Toyota Blue Grass Stakes Day at Keeneland in Lexington, Ky., Saturday, April 8, 2017.

A horse is lead around the paddock before the start of the 4th race on opening day at Keeneland in Lexington, Ky., Friday, April 7, 2017. Opening day attendance was recorded at 14,301.

Jace Gentil, of Hanover, Ind., keeps his betting slip in his hat in between races during Toyota Blue Grass Stakes at Keeneland in Lexington, Ky., Saturday, April 8, 2017.

A jet flies over fans while making a landing at Blue Grass Airport during Toyota Blue Grass Stakes Day at Keeneland in Lexington, Ky., Saturday, April 8, 2017.

Wissam (5) with jockey John Velazquez make their way through the paddock before the start of the 4th race during opening day at Keeneland in Lexington, Ky., Friday, April 7, 2017.

Paris Scroud, left, and Ashston Williams, both of Atlanta, Ga., stand near the track before the 93rd running of the Toyota Blue Grass Stakes at Keeneland in Lexington, Ky., Saturday, April 8, 2017.

Irap (6) and jockey Julien Leparoux pulls ahead of Practical Joke (7) with jockey Joel Rosario to win the 93rd running of the Toyota Blue Grass Stakes at Keeneland in Lexington, Ky., Saturday, April 8, 2017.