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Another horse has died at Churchill Downs, making the total count eight horses this season.

Rio Moon was euthanized due to a fatal injury suffered during training on Sunday.

There have been numerous efforts in recent years to improve the safety of horse racing, such as implementing stricter regulations and improving track conditions.

Churchill Downs released a statement after the Derby, saying they would continue to look into the deaths and what may have caused the injuries leading to them.

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