Assertion: pitcher's motion | /r/RelatedTo | his pitching delivery
Facets:
value: naturally
type: MANNER
Source sentences:
text: A balk will be called when a pitcher who is on the rubber makes any motion naturally associated with his pitching delivery and does not actually deliver the ball, feigns a throw to first or third base and fails to complete the throw, or fails to step directly toward a base before throwing to that base.