In this Oct. 30, 2013, file photo, an exercise rider takes a horse for a workout at Santa Anita Park with palm trees and the San Gabriel Mountains as a backdrop in Arcadia, Calif. A second horse in two days and 29th overall died at Santa Anita, Sunday, June 9, 2019, where management has chosen to continue racing for the rest of the current meet. (AP Photo/Jae C. Hong, File)