Orioles to call up top prospect Jackson Holliday The Baltimore Orioles are calling up infielder Jackson Holliday, the No. 1 prospect in baseball, ESPN MLB insider Jeff Passan was first to report Tuesday evening. Holliday did not make the MLB roster and started the season in Triple-A Norfolk, where he slashed .333/.482/.595 (1.077 OPS) through … Continue reading Orioles to call up top prospect Jackson Holliday