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 Baseball Statistics Glossary


#P/PA Pitches seen per plate appearance
2B Doubles
3B Triples
AB At-bats
Avg Batting average 
H divided by AB
BB Bases on balls
CS Caught stealing
FB Fly balls hit, excluding home runs
G Games played
G/F Ground ball/fly ball ratio 
GB divided by FB
GIDP Grounded into double play
H Hits
HBP Hit by pitch
HR Home runs
IBB Intentional bases on balls
LOB Runners left on base
OBP On-base percentage 
(H + BB + HBP) divided by (AB + BB + HBP + SF)
OPS On-base percentage plus slugging percentage. See OBP, above, and Slg, below, for definitions
OW% Offensive winning percentage. The theoretical winning percentage of a team comprising nine of the same players (e.g. nine Ken Griffey Jrs.). 
1) Figure runs created per 27 outs [Note: Total outs = (AB - H + C + GIDP + SH + SF)]. 2) Divide by league average runs per game. 3) Square the result. 4) Divide that figure by 1 + itself
Qualified year-to-date In order to qualify for batting titles in averaged categories (Avg, Slg, OBP, OPS, RC, OW%, #P/PA, G/F), a player must average at least 3.1 plate appearances for every game his team has played. Sorting by qualified year-to-date excludes all players not currently on pace to reach that minimum
R Runs
RBI Runs batted in
RC Runs created 
[(H + BB + HBP - CS - GIDP) times (Total bases + .26[BB - IBB + HBP] + .52[SH + SF + SB])] divided by (AB + BB + HBP + SH+ SF)
SB Stolen bases
SF Sacrifice flies
SH Sacrifice hits
Slg Slugging percentage 
TB divided by AB
SO Strikeouts
TB Total bases 
Hits + 2B + (3B times 2) + (HR times 3)
TPA Total plate appearances 
AB + BB + HBP + SF + SH + times reached on defensive interference



A Assists
CERA Catcher’s earned-run average. Earned-run average of club’s pitchers with a particular catcher behind the plate
CS Runners caught stealing
CS% Percentage of runners caught stealing
DP Double plays
E Errors
FPct Fielding percentage 
(PO + A) divided by (PO + A + E)
G Games played
GS Games started
Inn Innings
PB Passed balls
PCS Pitchers’ caught stealing. Total runners caught stealing when the player who initiates the fielding play is the pitcher
PO Putouts
POA Pickoff attempts
Qualified year-to-date In order to qualify for fielding titles in averaged categories (FPct., RF, CS%, CERA), a player must meet the following qualifiers: Catchers must play 1/2 of their team's games; Pitchers must average at least one inning pitched for each of their team's games; Position players must play 2/3 of their team's games. Sorting by qualified year-to-date excludes all players not currently on pace to reach that minimum
RF Range factor 
(PO + A) divided by innings
SBA Stolen bases allowed
TC Total chances
ZR Zone rating. The percentage of balls fielded by a player in his typical defensive "zone," as measured by STATS, Inc.