Marcos Zulueta, the now-barred Thoroughbred trainer facing two felony charges in the alleged nationwide horse-doping conspiracy case, appears on the verge of joining the growing list of defendants flipping their initial "not guilty" pleas to "guilty." On Thursday, Zulueta, formerly based in the mid-Atlantic region, was granted an Oct. 15 change-of-plea hearing in United States District Court (Southern District of New York). If Zulueta does indeed end up pleading guilty, his flip will be the eighth in the wide-ranging case that initially included 28 defendants listed in the original indictment...