One horse threw his head and crashed into a crowd of horses going in the opposite direction . Six Drivers and Caixa both died instantly , and a rider was taken to a hospital . Caixa II , a year - old , won seven stakes races and $ 1.8 million in his career .
One horse threw his rider and ran into a crowd of horses going in the opposite direction . Six Drivers and Caixa Eletronica died instantly , and a rider was taken to a hospital . Caixa Eletronica , a 9-year-old , won seven stakes races and $ 1.8 million in his career .