The term 'Diamond Authority' refers to the umpires who officiate baseball games. UMP is an acronym for UMPIRE, and UMPIRE is a six-letter word for the same job. Umpires are responsible for making sure that the rules of the game are followed, and they have the authority to make decisions on the field. They also have the power to eject players or coaches from the game if necessary. Umpires are an important part of the game, and their decisions can have a major impact on the outcome of the game.