Baseball Official is a term used to describe the people who are responsible for officiating a baseball game. The Scorer, UMP, and UMPIRE are all roles that fall under this category. The Scorer is responsible for keeping track of the score and other statistics during the game. The UMP is a short form of UMPIRE, which is the person who makes the calls on the field. The UMPIRE is the head official who is in charge of the game and makes the final decisions.