Jackson Holliday promoted to High-A Aberdeen

Orioles promote Jackson Holliday, MLB's No. 1 prospect, to Triple-A at age 19

Jackson Holliday Prospect Report

Jackson Holliday being promoted to Double-A (source)

Prospect Report: Jackson Holliday Homers and Triples For High-A Aberdeen — College Baseball, MLB Draft, Prospects - Baseball America

Orioles promote INF Jackson Holliday, 19, to Triple-A - Field Level Media - Professional sports content solutions

Orioles minor league recap 8/20: Jackson Holliday hits his first pro homer - Camden Chat

Jackson Holliday promoted to High-A Aberdeen

Orioles minor league report: Jackson Holliday off to 'rare' start at High-A, where other top prospects struggled

Jackson Holliday promotion: Orioles send top shortstop prospect to High-A Aberdeen - DraftKings Network

Prospect Report: Jackson Holliday Homers and Triples For High-A Aberdeen — College Baseball, MLB Draft, Prospects - Baseball America

Orioles prospect Jackson Holliday adjusting to High-A Aberdeen with new goals: 'I feel like I'm in a good spot' – The Mercury News