Horse euthanized, jockey breaks collarbone in spill at Churchill Downs

A jockey whose horse had to be euthanized following a spill at Churchill Downs on Thanksgiving Day broke his collarbone. Jockey Rafael Mojica Jr. spent Thursday night in the hospital and will be sidelined for about six weeks, agent Julio Espinoza said Friday in a release from Churchill Downs. Espinoza said Mojica was thrown clear of his mount, Midway Station, when the horse fell after clipping heels…