In April, Samuel Basallo opened eyes by hitting an opposite-field home run. It wasn’t because the Orioles’ catching prospect mashed a meatball a long way — although, he’s had a few of those in his young career, too — but instead because he hit a pitch out of the strike zone over the fence. After Basallo hit the high and away pitch for a home run, Delmarva hitting coach Josh Bunselmeyer said another Orioles prospect took notice. “Wow, that’s impressive,” Bunselmeyer recalls Jackson Holliday saying after Basallo’s long ball. Holliday, the No.