What is indicated by a complete stop with the glove at or below the chin?

When a pitcher comes to a complete stop with their glove at or below the chin, this action is crucial as it signifies that they are in a legal pitching position. This complete stop is an essential requirement outlined in the regulations, ensuring that the pitcher has a clear and defined moment before beginning their delivery to the plate. This position allows for consistent pitching mechanics and fair play, as it prevents any potential deceptive movements that could confuse the batter.

In contrast, actions indicating a balk or improper pitching mechanics would not entail maintaining this specific glove position. Therefore, the requirement for the glove to be in this position is in line with the rules, thereby confirming that a legal pitch must commence from this complete stop, making it a necessary step in the pitching process. Hence, the requirement of a complete stop at or below the chin properly aligns with the established regulations for legal pitching.