RESEARCH: Are Plate discipline metrics useful?
Jan 25 2019
Are Plate Discipline Metrics Useful?
Batter plate discipline metrics are often mentioned to provide evidence for a power breakout or an improved eye. At BaseballHQ.com, 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):
- Chase (CH) – percentage of swings at balls out of the zone
- Zone-Swing% (ZS) – swings at pitches in the zone
- Contact% (CO) – percentage of swings that result in contact (not to be confused with BHQ's ct%)
Methodology
Using data from 2009-2018, we’ll first examine...
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