MLB Pipeline's Jim Callis: Orioles' Jackson Holliday Is Top Prospect In Baseball - PressBox
Jim Callis: “I will be absolutely surprised if Jackson Holliday is not a superstar - Blog
Jim Callis Says He'd Take Jackson Holliday Over Any Other Prospect In All Of Baseball
Jim Callis: “I will be absolutely surprised if Jackson Holliday is not a superstar - Blog
Jim Callis Says He'd Take Jackson Holliday Over Any Other Prospect In All Of Baseball