Five months ago, Jackson Holliday smiled as his teammates ... Holliday was only 20 years old in late September. “Bird Bath Water,” it read. “0% alcohol for Orioles under 21.” ...

SARASOTA—On most teams, Jackson Holliday would be the regular shortstop, but not on the Orioles. They have Gunnar Henderson. Last year, the Orioles decided that Holliday needed to learn second base.

Jackson Holliday’s reaction as it clicked in the batting cage. His new swing and how it kept Holliday balanced. The excitement when the results were finally there. Late last season, Holliday and ...