A three-horse spill in the sixth race March 21 at Tampa Bay Downs sent jockeys Keiber Coa, Silvia Zapico, and Ricardo Mejias to the St. Joseph's Hospital Trauma Center in Tampa, Fla.
Coa broke his collarbone and Zapico suffered a broken leg, while Mejias has an apparent wrist injury.
Coa and Mejias are expected to be released Saturday night. Zapico will be admitted to the hospital's main unit for further observation and treatment.
The accident resulted in 6-year-old gelding Wild Kiss and 4-year-old colt Iron Media being euthanized because of the severity of their injuries.
The third horse involved, 4-year-old gelding Track Telling, appeared to emerge from the spill unscathed.
The accident occurred when Wild Kiss, who was leading the 12-horse field, broke down at the seven-sixteenths pole in the seven-furlong claiming race, unseating Coa.
Iron Media appeared to try to jump over the fallen Wild Kiss, but made contact and fell, throwing Zapico to the ground. Track Telling and Mejias then tumbled over Iron Media.