Jockey Laffit Pincay Jr. suffered three broken ribs in a dramatic spill in Wednesday's second race at Santa Anita.
Riding Strawberry Patch, a 4-year-old trained by Noble Threewitt for owner Barbara Hunter, Pincay went down heavily when the gelding suffered a compound fracture of the cannon bone in his right foreleg with about three-eighths of a mile to go in the 1 1/16-mile race.
Pincay, 50, was kicked by a trailing horse, Fourstarattraction, and was taken immediately to nearby Arcadia Methodist Hospital.
X-rays revealed the broken ribs, and he was kept overnight for observation.
Strawberry Patch, who was euthanized, was claimed out of the race for $16,000 by trainer Barry Abrams for owner John Liviakis.
Pincay is second to Bill Shoemaker on the all-time list with 8,522 wins.