6 Theories on the Origin of the Bullpen
No one really recognize where the termbullpencomes from , and no one hypothesis has enough compelling evidence to corroborate or controvert the descent . No more certain is the debate about when the wordbullpenwas first used . OED sites the early use dating back to a 1924 Chicago Tribune article , while other sources say the field refer to where pitchers warm up up ( especially substitute twirler ) , was first called thebullpenin a Baseball Magazine article published in 1915 ....