Base Umpire

On every pitch, what are the immediate priorities for a base umpire?

1. Watching for the illegal pitch or balk if callable.

2. Handling pickoff plays to the bases when possible

3. Assisting on the check swing appeal

4. Handling the "runner leaving early" rules (level / league dependent)

5. Watching for pickoff plays from the catcher

6. Watching for attempted steals, particularly double steals when possible

If the ball is hit the base umpire's priorities depend on the game situation