Trainer Marcos Zulueta joined the growing list of those involved in the Jason Servis-Jorge Navarro doping scandal to change their plea to guilty. Zulueta did so Friday when appearing via teleconference before federal judge Mary Kay Vyskocil. In doing so, Zulueta became the ninth of 27 people indicted in March of 2020 to plead guilty. Having pleaded guilty to adulterating and misbranding drugs with the intent to defraud or mislead, he faces up to five years in prison and will be sentenced in February. In the original indictment, Zulueta was...