Churchill Downs Scary Crash Sends Horses, Riders Flying Before Kentucky Derby

Horses and riders hit the turf hard Saturday after a crash during a race leading up to The Kentucky Derby.

Near the final stretch of The Woodford Reserve Turf Classic a horse named Kasaqui got tripped up, causing a chain reaction ... Tourist then fell over Kasaqui, sending horse and rider to the ground.

Luckily, reports say all riders and horses were OK after the accident.