Orioles’ Jackson Holliday, MLB’s top prospect, promoted to Triple-A after starting season in low-A | CBS Sports Headlines Orioles’ Jackson Holliday, MLB’s top prospect, promoted to Triple-A after starting season in low-A The former No. 1 overall pick continues his fast rise through the Orioles’ system ESN FeedsThis post was … Continue reading Orioles’ Jackson Holliday, MLB’s top prospect, promoted to Triple-A after starting season in low-A