![Patrick Semansky FILE - Uncle Lino is comforted after an injury during the 141st Preakness Stakes horse race at Pimlico Race Course, Saturday, May 21, 2016, in Baltimore. (AP Photo/Patrick Semansky)](https://mapi.associatedpress.com/v2/items/d67c1b8a30a24917922a8dec61ddc50e/preview/preview.jpg?s=680x)
FILE - Uncle Lino is comforted after an injury during the 141st Preakness Stakes horse race at Pimlico Race Course, Saturday, May 21, 2016, in Baltimore. (AP Photo/Patrick Semansky)
![Jerry Jackson FILE - An outrider intercepts Havnameltdown after the horse lost it's rider and suffered a catastrophic leg injury during the sixth race prior to the 148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. The Bob Baffert trained horse was euthanized on the race track. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (Jerry Jackson/The Baltimore Sun via AP, File, File)](https://mapi.associatedpress.com/v2/items/4b3285fc5ff443ae9ff78d2ecacf3686/preview/preview.jpg?s=680x)
FILE - An outrider intercepts Havnameltdown after the horse lost it's rider and suffered a catastrophic leg injury during the sixth race prior to the 148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. The Bob Baffert trained horse was euthanized on the race track. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (Jerry Jackson/The Baltimore Sun via AP, File, File)
![Brian Bohannon FILE - Track personnel try to hold down Eight Belles after the 134th Kentucky Derby at Churchill Downs in Louisville, Ky., May 3, 2008. Eight Belles was euthanized after breaking both front ankles following a second-place finish in the Kentucky Derby. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Brian Bohannon, File)](https://mapi.associatedpress.com/v2/items/1a60028bd6a5487abed35dee976a701e/preview/preview.jpg?s=680x)
FILE - Track personnel try to hold down Eight Belles after the 134th Kentucky Derby at Churchill Downs in Louisville, Ky., May 3, 2008. Eight Belles was euthanized after breaking both front ankles following a second-place finish in the Kentucky Derby. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Brian Bohannon, File)
![Mark J. Terrill FILE - Mongolian Groom is treated after the Breeders' Cup Classic horse race at Santa Anita Park, in Arcadia, Calif., Nov. 2, 2019. Breeders' Cup Classic. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame.. (AP Photo/Mark J. Terrill, File)](https://mapi.associatedpress.com/v2/items/edc5647d14c748749a26437357c6dc39/preview/preview.jpg?s=680x)
FILE - Mongolian Groom is treated after the Breeders' Cup Classic horse race at Santa Anita Park, in Arcadia, Calif., Nov. 2, 2019. Breeders' Cup Classic. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame.. (AP Photo/Mark J. Terrill, File)
![Charles Bauer FILE - Up an Octave, right, ridden by John Velazquez, breaks down and falls about a sixteenth of a mile past the finish line after winning the Forerunner Stakes horse race at Keeneland in Lexington, Ky., April 20, 2006. Up an Octave had to be euthanized on the track. No. 8 is Yate's Black Cat, ridden by Rene Douglas. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Charles Bauer, File)](https://mapi.associatedpress.com/v2/items/d636ac2fa6504a57bb97cc40a00f5042/preview/preview.jpg?s=680x)
FILE - Up an Octave, right, ridden by John Velazquez, breaks down and falls about a sixteenth of a mile past the finish line after winning the Forerunner Stakes horse race at Keeneland in Lexington, Ky., April 20, 2006. Up an Octave had to be euthanized on the track. No. 8 is Yate's Black Cat, ridden by Rene Douglas. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Charles Bauer, File)
![Jerry Jackson FILE - A track worker carries the saddle blanket of Havnameltdown away as the horse is euthanized after suffering a catastrophic leg injury during the sixth race prior to the 148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. (Jerry Jackson/The Baltimore Sun via AP, File)](https://mapi.associatedpress.com/v2/items/0f13937edda14de1bf5931e13b485f48/preview/preview.jpg?s=680x)
FILE - A track worker carries the saddle blanket of Havnameltdown away as the horse is euthanized after suffering a catastrophic leg injury during the sixth race prior to the 148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. (Jerry Jackson/The Baltimore Sun via AP, File)
![Nick Wass FILE - Horses compete during the148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Nick Wass, File)](https://mapi.associatedpress.com/v2/items/13bf67bf8b1548889051f16e9c31c116/preview/preview.jpg?s=680x)
FILE - Horses compete during the148th running of the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 20, 2023, in Baltimore. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Nick Wass, File)
![Julio Cortez FILE - Javier Castellano, atop Mage, third from left, is seen with others behind the pack as they make the first turn while competing in the 149th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2023, in Louisville, Ky. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Julio Cortez, File)](https://mapi.associatedpress.com/v2/items/0050de38db494e54bf6e776135f34201/preview/preview.jpg?s=680x)
FILE - Javier Castellano, atop Mage, third from left, is seen with others behind the pack as they make the first turn while competing in the 149th running of the Kentucky Derby horse race at Churchill Downs Saturday, May 6, 2023, in Louisville, Ky. Horse deaths marred last year’s Kentucky Derby, Preakness and Breeders’ Cup, with officials finding no single factor to blame. (AP Photo/Julio Cortez, File)