UPDATED with new post positions and odds; graphic shows horses in the Kentucky Derby with post positions and silks; 6c x 3 3/4 inches; 295.2 mm x 95 mm;

IMAGE DISTRIBUTED FOR LONGINES - Serengeti Empress, ridden by Jose Ortiz, wins the 145th running of the Longines Kentucky Oaks, Friday, May 3, 2019 at Churchill Downs in Louisville, Ky.  Longines, the Swiss watch manufacturer known for its luxury timepieces, is the Official Watch and Timekeeper of the 145th annual Kentucky Derby. (Diane Bondareff/AP Images for Longines)

Fans wait in the rain before the 145th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 4, 2019, in Louisville, Ky. (AP Photo/Charlie Riedel)

A race fan sits under the plastic cover from the rain during the 145th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 4, 2019, in Louisville, Ky. (AP Photo/Charlie Riedel)

Kentucky Derby entrant Maximum Security is ridden during a workout at Churchill Downs Wednesday, May 1, 2019, in Louisville, Ky. The 145th running of the Kentucky Derby is scheduled for Saturday, May 4. (AP Photo/Charlie Riedel)

People cheer as they watch a race at Churchill Downs before the 145th running of the Kentucky Derby horse race Saturday, May 4, 2019, in Louisville, Ky. (AP Photo/Charlie Riedel)

Kentucky Derby entrant Game Winner runs during a workout at Churchill Downs Thursday, May 2, 2019, in Louisville, Ky. The 145th running of the Kentucky Derby is scheduled for Saturday, May 4. (AP Photo/Charlie Riedel)

Women wear hats before the 145th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 4, 2019, in Louisville, Ky. (AP Photo/Matt Slocum)