The Latest: A Kentucky Derby with no fans and a big favorite Kentucky Derby entry Thousand Words runs during an early morning workout at Churchill Downs, Friday, Sept. 4, 2020, in Louisville, Ky. The Kentucky Derby is scheduled for Saturday, Sept. 5th. (AP Photo/Charlie Riedel)
Protesters march past the Churchill Downs racetrack before the 146th running of the Kentucky Derby horse race, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
A couple watch a race before the 146th running of the Kentucky Derby at Churchill Downs, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Horses run during a race before the 146th running of the Kentucky Derby at Churchill Downs, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Guest watch a race before the 146th running of the Kentucky Derby at Churchill Downs, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Guest of Kentucky Derby entry Tiz the Law stand during the national anthem before the 146th running of the Kentucky Derby at Churchill Downs, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Two women look at a program before the 146th running of the Kentucky Derby at Churchill Downs, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Police officers watch as protesters march past the Churchill Downs racetrack before the 146th running of the Kentucky Derby, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
Protesters march past the gates of Churchill Downs racetrack before the 146th running of the Kentucky Derby, Saturday, Sept. 5, 2020, in Louisville, Ky. (AP Photo/Charlie Riedel)
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Kentucky Derby entry Thousand Words runs during an early morning workout at Churchill Downs, Friday, Sept. 4, 2020, in Louisville, Ky. The Kentucky Derby is scheduled for Saturday, Sept. 5th. (AP Photo/Charlie Riedel)