Glossary: A-B

This sabermetric glossary is reprinted from the Baseball Forecaster. 

A-B | C-K | L-O | P-R | S-Z

Abbreviations and Beginning Concepts

Avg:Batting average (see also BA)

BA: Batting average (see also Avg)

BABIP: Batting average on balls-in-play (see Hit rate)

Ball%: Ball percentage

Base Performance Indicator(BPI): A statistical formula that measures an isolated aspect of a player's situation-independent raw skill or a gauge that helps capture the effects that random chance has on skill. Although there are many such formulas, there are only a few that we are referring to when the term is used in this book. For batters, the skills BPIs are linear weighted power index (PX), speed score index (SX), walk rate (bb%), contact rate (ct%), batting eye...