Churchill Downs Inc. is reportedly exploring selling off TwinSpires Racing, which the gaming corporation describes as the "premier online horse racing wagering platform in the United States." The financial news site Bloomberg first broke the CDI scoop at 3:40 p.m. Eastern Dec. 2, citing several sources who requested anonymity because they were sharing information that hadn't yet been divulged by the publicly traded company. A CDI official declined comment. Bloomberg reported that CDI "is working with an adviser to solicit potential interest in the wagering platform." One of the sources...