We'll start this unit with a look at the appropriate stances for a plate umpire before, during and after pitches.

Why should all plate umpires use the same mechanics and body positioning for each pitch? There are three main reasons:

1. To ensure the best possible views for making accurate calls during a game.
2. To conserve the umpire's physical and mental energy through efficient movement and stances.
3. To maintain consistency of performance between all umpires. No umpire's mechanics should appear different from another's.