Jockey Robby Albarado remained hospitalized at the University of Kentucky Medical Center in Lexington, Ky. on Saturday for treatment of injuries he sustained during the ninth race at Keeneland on Friday.Albarado, the third-leading rider in the first five days of the meet, had a fractured left wrist, fractured ribs on the left side, a fractured pelvis, a partially collapsed lung, and a concussion. It is unknown when he will be released from the hospital or when he will be able to resume riding."He is still in a lot of pain," fellow jockey Marlon St. Julien said at the hospital Saturday morning. We don't know yet when he will be able to leave. There is some discussion that he may have to have surgery on his wrist.Chief Red Sky, the favorite ridden by Albarado, was near the back of the field of 10 when he fell entering the final turn in the 1 1/16-mile allowance race on the turf. Inallprobability, the colt just behind Chief Red Sky into the turn, stumbled over the fallen horse and rider and also went to the ground with rider Shane Sellers aboard. Chief Red Sky, a 4-year-old son of Kingmambo, fractured a leg and was humanely euthanized on the track. Inallprobability was transported back to the barn area in the equine ambulance and was reported to have sustained no serious injuries in the spill.Sellers also complained of back pain, but walked off the track on his own and rode on the Saturday card.