Glossary - Seamheads Negro Leagues Database

Glossary

Glossary Links
Baseball-Reference FanGraphs SABR Guide Wikipedia The Hardball Times
MLB.com Baseball Prospectus ESPN Sabermetrics (Wiki) Baseball-Almanac

Batting Statistics

Counting Stats

G = Games
PA = Plate Appearances (AB + BB + HBP + SH + SF)
AB = At Bats
R = Runs Scored
H = Hits
2B = Doubles
3B = Triples
HR = Home Runs
RBI = Runs Batted In
SB = Stolen Bases
CS = Caught Stealing
BB = Bases on Balls or Walks
K = Strikeouts
IBB = Intentional Walks
HBP = Hit By Pitches
SH = Sacrifice Hits
SF = Sacrifice Flies
DP = Double Plays

Rate Stats

BA = Batting Average (H / AB)
OBP = On Base Percentage ((H + BB + BHP) / (AB + BB + HBP + SF))
SLG = Slugging Percentage ((H + 2B + 3B * 2 + HR * 3) / AB)
OPS = On Base Plus Slugging (OBP + SLG)
OPS+ = Adjusted OPS ((SLG / lgSLG + OBP / lgOBP - 1) * 100)
wOBA = Weighted On Base Average (Formula)
BB% = Walk Percentage (BB / PA)
K% = Strikeout Percentage (K / PA)
BB/K = Walks per Strikeout (BB / K)
HR% = Home Run Percentage (HR / PA)
ISO = Isolated Slugging ((2B + 3B * 2 + HR * 3) / AB)


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Statistical and biographical data for the The Negro Leagues Database, except 1923 and 1933, were compiled by Gary Ashwill. Copyright 2011-2013 Gary Ashwill. All rights reserved. Playing statistics for 1923 were compiled by Patrick Rock. Copyright 2011-2013 Patrick Rock. All rights reserved. Playing statistics for 1933 were compiled by Scott Simkus. Copyright 2013 Scott Simkus. All rights reserved.


Defensive Regression Analysis data used here was obtained with permission from Michael Humphreys, author of Wizardry

Win Shares are calculated using the formula in the book Win Shares by Bill James