“That’s how a guy like this is our guy,” said Damon Oppenheimer, vice president of domestic amateur scouting, in a conference call with reporters Tuesday.

Delvecchio entered the Bruins’ starting rotation this season as a junior and is the 130th athlete drafted under head coach John Savage’s 21-year tenure.

The Orioles, with the largest bonus pool among all 30 teams, swooped in and took him at No. 37 overall, getting an outstanding left-handed swinging bat with more pop than you’d expect from a 5-foot-1...