Worth was euthanized shortly after this incident due to his extensive injuries .
Worth 's jockey , MacTaggart , rode too closely to another horse , causing a three horse collision that severely injured two other jockeys and severed two tendons in Worth 's leg .
Worth was euthanized shortly after this incident due to jockey 's extensive injuries .
Worth 's jockey , MacTaggart , rode too closely to another horse , causing a three horse collision that severely injured two other jockeys and severed two tendons in Worth 's leg .