Horse Collapses, Dies at Del Mar Racetrack

World Approval ridden by John Velazquez (#5) wins the Breeders' Cup Mile on day two of the 2017 Breeders' Cup World Championship at Del Mar Race Track in Del Mar, Calif., on Nov. 4, 2017. Harry How/Getty Images

DEL MAR, Calif.—A racehorse collapsed and died at Del Mar Thoroughbred Club on the opening day of the track’s fall season.

“The 5-year-old gelding Kazuhiko collapsed and died while walking back to the barn after the 5th race at Del Mar ... a sudden death,” Mike Marten, spokesman for the California Horse Racing Board, told City News Service.