Baseball officials are an integral part of the game. Umpires (7 letters) are responsible for making sure the rules of the game are followed and that the game is played fairly. They make calls on the field, such as balls and strikes, and can eject players or coaches from the game if necessary. Umpires also have the authority to review plays using instant replay. UMPS (4 letters) is a shortened version of umpire and is often used to refer to all baseball officials.