Umpires
Roles & Responsibilities:
When there are multiple umpires, they divide their roles.
Plate umpires: In most instances, the plate umpire is the head umpire. He or she calls balls and strikes behind the catcher and fair/foul balls short of the bases. This umpire also keeps the supply of baseballs and decides if the field is playable if the weather is poor.
Base umpires: The first base and third base umpires make fair/foul calls past the base and make out and safe calls at the bases. They also decide appeals on swinging strike calls. If there are two umpires, one base umpire will roam, depending upon the situation.
Nicknames:
“Umpire” is often shortened to “ump”, and another generic term for an umpire is “blue”, which refers to the light blue shirts that are part of many basic umpire uniforms.
In charge:
There’s no room for debate with an umpire while a game is ongoing, even though you are likely to see managers and players arguing with an umpire from time to time.
An umpire has complete authority over the game. They have the power to eject anybody who doesn’t agree, whether it’s a player, coach or an unruly spectator.