RESEARCH: Are Plate discipline metrics useful?

Are Plate Discipline Metrics Useful?

Batter plate discipline metrics are often mentioned to provide evidence for a power breakout or an improved eye. At, we have long-established metrics such as PX, bb%, and ct% that are already quite reliable.  Can we use plate discipline metrics to improve our understanding of a batter?

We consider three metrics and examine whether they increase our understanding of a batter’s plate skills (bb% and ct%) or power (PX):

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  For more information about the terms used in this article, see our Glossary Primer.