Churchill Downs sees eighth horse death as Rio Moon euthanized at home of the Kentucky Derby

Louisville, Ky. — A horse died Sunday after a race at Churchill Downs, making it the eighth fatality in recent weeks at the home of the Kentucky Derby. Rio Moon "suffered a catastrophic injury to his left foreleg a few strides after the wire," according to notes in the Equibase chart for the sixth race.

The 3-year-old colt ridden by Martin Garcia was euthanized, the chart said. Rio Moon was trained by Dale Romans and was winless in six career starts with earnings of $11,621.

Two horses were euthanized after being injured in races on the Kentucky Derby undercard on May 6, Churchill Downs has confirmed. Five others were euthanized after training and racing incidents at the track in the days leading up to the Derby.