BATTING

AB: At-bats
The number of times a player bats, excluding walks, hit-by-pitches, sacrifices, errors, fielder’s choices, and catcher’s interferences.

AVG: Batting Average
The ratio of a player’s hits to their at-bats.

BABIP: Batting Average on Balls in Play
The batting average for balls hit into play, excluding home runs.

BB: Walks
The number of times a player is awarded first base after receiving four balls outside the strike zone.

BB%: Walk Rate
The percentage of a player’s plate appearances that result in a walk.

BB/K: Walk to Strikeout Ratio
A comparison of how often a player walks versus how often they strike out.

CS: Caught Stealing
The number of times a player is tagged out while attempting to steal a base.

2B: Doubles
The number of hits where a player safely reaches second base without an error or fielder’s choice.

GDP: Grounded into Double Plays
The number of times a player hits a ground ball that results in two outs.

G: Games Played
The number of games in which a player appears.

HP: Hit By Pitches
The number of times a player reaches first base after being hit by a pitched ball.

HR: Home Runs
The number of hits where a player safely reaches home plate without an error or fielder’s choice.

IBB: Intentional Walks
The number of times a player is intentionally awarded first base by the opposing team.

ISO: Isolated Power
A measure of a hitter’s raw power, calculated as SLG – AVG.

K%: Strikeout Rate
The percentage of a player’s plate appearances that end in a strikeout.

OBP: On Base Percentage
The percentage of plate appearances in which a player reaches base.

OPS: On Base plus Slugging
The sum of a player’s on-base percentage and slugging percentage.

OPS+: On Base plus Slugging Plus
A normalized version of OPS that adjusts for park factors, with 100 always being the league average. Higher values are better.

PA: Plate Appearances
The total number of times a player comes to bat.

Qualifier: Qualified Hitter
A player is qualified for titles with 3.1 PA per team game played (NPB) or 2.7 PA per team game played (Farm).

R: Runs
The number of times a player crosses home plate to score.

RBI: Runs Batted In
The number of runs a player drives in with their at-bats, except when grounding into a double play or reaching on an error.

SB: Stolen Bases
The number of times a player successfully steals a base.

SF: Sacrifice Flies
A fly ball that results in a run being scored, but the batter is out.

SH: Sacrifice Hits
A bunt that allows a runner to advance to the next base, but the batter is out.

SLG: Slugging Percentage
The total number of bases a player records per at-bat.

SO: Strikeouts
The number of times a player is put out on three strikes.

TB: Total Bases
The total number of bases a player records from hits.

3B: Triples
The number of hits where a player safely reaches third base without an error or fielder’s choice.

TTO%: Three True Outcomes Rate
The percentage of a player’s plate appearances that result in one of the three true outcomes: a home run, a strikeout, or a walk.

PITCHING

BB: Walks
The number of times a pitcher allows a batter to reach first base by throwing four balls.

BB%: Walk Rate
The percentage of batters faced by a pitcher that result in walks.

BF: Batters Faced
The total number of hitters a pitcher faces.

CG: Complete Games
The number of games where a pitcher pitches the entire game.

Diff: ERA-FIP Differential
The differential of a pitcher’s ERA and FIP. Higher values indicate underperformance and lower values indicate overperformance relative to expectations.

ERA+: Earned Run Average Plus
A normalized version of ERA that adjusts for park factors, with 100 always being the league average. Higher values are better.

ER: Earned Runs
The number of runs scored against the pitcher that are not the result of errors or passed balls.

FIP: Fielding Independent Pitching
A measure of a pitcher’s effectiveness based on strikeouts, walks, and home runs, independent of defensive performance, calculated as ((HR x 13) + (3 * (BB + HBP)) – (2 * K)) / IP + FIP constant.

FIP-: Fielding Independent Pitching Minus
A normalized version of FIP that adjusts for park factors, with 100 always being the league average. Lower values are better.

G: Games Played
The number of games in which a pitcher appears.

HLD: Holds
The number of games a relief pitcher enters in a save situation, maintains the lead, but does not finish.

HR: Home Runs
The number of home runs a pitcher allows.

HR%: Home Run Rate
The percentage of batters faced by a pitcher that results in home runs.

H: Hits
The number of hits a pitcher allows.

HB: Hit By Pitches
The number of batters a pitcher hits with a pitch.

IP: Innings Pitched
The total number of innings a pitcher completes, recorded in one-third increments.

IBB: Intentional Walks
The number of walks a pitcher intentionally issues.

K%: Strikeout Rate
The percentage of batters faced by a pitcher that result in strikeouts.

K-BB%: Strikeout Rate minus Walk Rate
The difference between a pitcher’s strikeout rate and walk rate.

kwERA: Strikeout-Walk based Earned Run Average
An estimate of a pitcher’s ERA based on strikeout and walk rates, calculated as 4.80 – 10 * (SO-BB) / BF. While this may seem oversimplistic, K-BB% is one of the best indicators of future performance.

kwERA-: Strikeout-Walk based Earned Run Average Minus
A normalized version of kwERA with 100 always being the league average. Lower values are better.

L: Losses
The number of games a pitcher is credited with a losing decision.

Qualifier: Qualified Pitcher
A pitcher is qualified for titles with 1.0 IP per team game played (NPB) or 0.8 IP per team game played (Farm).

R: Runs
The total number of runs a pitcher allows.

SV: Saves
The number of games a pitcher finishes while preserving a lead of three runs or fewer.

SHO: Shutouts
The number of complete games a pitcher finishes without allowing any runs.

SO: Strikeouts
The number of batters a pitcher retires on strikes.

WHIP: Walks plus Hits per Inning Pitched
The average number of walks and hits allowed by a pitcher per inning.

WP: Wild Pitches
The number of pitches a pitcher throws that are too wild for the catcher to handle, allowing baserunners to advance.

W: Wins
The number of games a pitcher is credited with a winning decision.

Standings

B: Orix Buffaloes

C: Hiroshima Carp

D: Chunichi Dragons

Diff: Run Differential

DB: DeNA BayStars

E: Rakuten Eagles

F: Nipponham Fighters

G: Yomiuri Giants

H: SoftBank Hawks

Inter: Interleague

L: Seibu Lions

M: Lotte Marines

RA: Runs Against

RS: Runs Scored

S: Yakult Swallows

T: Hanshin Tigers

XPCT: Expected Win Percentage
The Pythagorean expectation of a team’s winning percentage, calculated as (Runs Scored)^1.83/(Runs Scored)^1.83 + (Runs Allowed)^1.83.