Reference Archive

The Baseball Raccoon Sabermetric Glossary

Welcome to the central reference archive. This page houses the structural definitions, underlying equations, and accounting parameters for our proprietary metrics. Use these coordinates to ground your data queries.

BRa— Base Advancement Registry

#bra

Definition: Tracks the absolute number of bases a player advances entirely via accidental, auxiliary, or non-batted-ball events.
Accounting Parameters: This includes bases gained down the baseline via defensive errors, balks, wild pitches, passed balls, passed walks, drop-third strikes, and catcher's interference.
Editorial Note: While data-hoarded as noise protection, isolating BRa allows researchers to subtract environmental accidents from a hitter's pure mechanical performance.

pRAD— Potential Runners Advanced

#prad

Definition: A contextual benchmark tracking the absolute maximum number of bases a player could have advanced baseline runners if they hit an un-catchable home run in 100% of their active plate appearances.
Equation: Calculated by multiplying the player's total Plate Appearances (PA) by 4, factored against the total physical occupancy of baseline runners present on screen during their plate appearances.
Research Utility: Contrasting pRAD against actual base gains exposes hidden talent distribution profiles and quantifies situational context.

RAD— Runners Advanced

#rad

Definition: The cumulative sum of physical bases gained down the baseline by a hitter and any active baserunners during their plate appearances.
Calculation Rules: If a batter walks with a runner on first, the batter receives 1 base credit (for reaching first) and the runner receives 1 base credit (moving first-to-second), totaling a 2-base RAD cell for the play.
Strategic Value: Unlike standard Batting Average, RAD values everything—including base-runner advancement volume—on a single metric line.

RCr— Runs Credited

#rcr

Definition: Our core run-accounting metric. It divides 1.00 full run credit among every offensive participant who advanced baseline bags or pushed a runner across home plate during a non-home-run scoring chain.
Fractional Guardrails
Accounting Parity: At the conclusion of a season, aggregate player RCr completely equals total team runs scored, avoiding standard Run/RBI double-counting.

TRA— Total Runners Advanced

#tra

Definition: A scaled, run-equivalent representation of a player's raw base advancement capacity.
Equation: TRA = RAD / 4
Research Utility: Dividing a player's total bases advanced (RAD) by 4 mirrors the scale of our standard RCr engine block, allowing clean comparison line graphs alongside standard rate stats like OPS+.

SB WPA— Stolen-Base Win Probability Added

#sbwpa

Definition: A situational leverage indicator calculating the exact shift in win expectancy percentage driven entirely by stolen base attempts and caught stealings.
Calculation Method: Rather than scoring all stolen bases equally, the parser tracks live game-state metrics before and after an attempt. Safe multi-base advancements on wild throws and caught-stealing failures deduct or add value based on leverage indices.

Methodology note: All proprietary metrics are computed from Retrosheet play-by-play event files and the Lahman Database. Definitions reflect the current engine version. Historical recalculations may differ from prior published figures when accounting rules are revised.