The term STEE-RIKE! CALLER is a job title for an umpire, which is a person who officiates a game or match in sports such as baseball, softball, and cricket. An umpire's primary responsibility is to make sure that the rules of the game are followed and to make decisions on the field when needed. The term STEE-RIKE! CALLER is used to describe an umpire who calls out 'STEE-RIKE!' when a pitch is thrown that is outside of the strike zone.