The death of horse Arms Runner overshadowed Sunday's San Simeon Stakes at Santa Anita Park in Arcadia, California, as he became the 23rd horse to die at the park since Dec. 26.
John Cherwa of the Los Angeles Times reported the news, noting Arms Runner fell during the Grade 3 race and was then euthanized after appearing to injure his right front leg. La Sardane tripped on Arms Runner but was able to get up.
Dr. Rick Arthur of the California Horse Racing Board confirmed the death.
Jockey Martin Pedroza was aboard Arms Runner and avoided serious injury, as did Ruben Fuentes aboard La Sardane.
According to Cherwa, 10 of the deaths at the track occurred during training on the dirt surface, seven occurred while racing on the dirt and now six have occurred during turf races.
Fox 5 San Diego noted Santa Anita reopened Friday after nearly a monthlong closure for officials to implement new regulations and inspect the track.
The California Horse Racing Board limited anti-inflammatory medications on horses and reduced the use of Lasix (which prevents horses from hemorrhaging) by 50 percent. What's more, Santa Anita officials implemented a number of measures, including transparency of veterinary records, additional out-of-competition testing and the need for trainers to seek permission to work a horse 48 hours in advance.
Arms Runner won his last race at Santa Anita Park in January.