Jack Christopher (Munnings), expected to go off the favorite in the GI TVG Breeders' Cup Juvenile but scratched by the track veterinarians the day prior to the race, has had a screw inserted in his left shin due to a stress fracture, according to his ownership group's racing manager, Bradley Weisbord. The news was first reported by the Blood-Horse. "Jack Christopher saw Dr. Larry Bramlage the Wednesday following the Breeders' Cup," said Weisbord. "He had a full examination, including a bone scan. A couple of areas lit up, mainly the...