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Stats 101

How to Read a Baseball Box Score: Every Abbreviation Explained

5 July 2026 · 7 min read

A box score is the whole game compressed into a grid of abbreviations. Once you know the shorthand you can tell your player's entire afternoon at a glance — and this page is the only table you need, whether you're reading a Major League box score or the one your coach posted after a 10U game.

What is a box score?

A box score is a summary table of a baseball or softball game, listing every player who appeared and what they did, with one row per player and one column per statistic. Hitters get their own block, pitchers get another.

It answers "what happened" rather than "how it happened." For the play-by-play version you want a scorecard, which records every plate appearance as it occurs — see how to keep score at a baseball game for that side of it.

Reading a hitter's line

The standard order is AB, R, H, RBI, and you'll often see BB and K after them. So a line reading 4 1 2 3 means four at-bats, one run scored, two hits, three runs batted in. A very good day.

The trap for new parents: AB is not the same as trips to the plate. Walks, hit-by-pitch and sacrifices don't count as at-bats. A player who walked twice and singled once in four trips shows as 2 AB, 1 H — which looks like a quiet game and wasn't.

Every hitting abbreviation

AbbreviationMeaningNotes
ABAt-batsPlate appearances minus walks, HBP and sacrifices
PAPlate appearancesEvery trip to the plate, no exceptions
RRuns scoredThe player themselves crossed the plate
HHitsSingles, doubles, triples and home runs combined
1BSingleSometimes omitted and inferred from H minus 2B, 3B and HR
2BDouble
3BTriple
HRHome run
RBIRuns batted inRunners who scored because of this batter
BBBase on balls (walk)Not an at-bat, so it never lowers batting average
IBBIntentional walkA subset of BB
HBPHit by pitchNot an at-bat; does count for on-base percentage
K or SOStrikeoutA backwards ꓘ means the batter was caught looking
SB / CSStolen base / caught stealing
SAC or SHSacrifice buntNot an at-bat, and not in the OBP denominator
SFSacrifice flyNot an at-bat, but it IS in the OBP denominator
TBTotal bases1 for a single, 2 a double, 3 a triple, 4 a home run
LOBLeft on baseRunners still on when the inning ended
AVGBatting averageH ÷ AB — calculator
OBPOn-base percentageHow often they reach base — calculator
SLGSlugging percentageTB ÷ AB — calculator
OPSOn-base plus sluggingOBP + SLG — calculator

Every pitching abbreviation

AbbreviationMeaningNotes
IPInnings pitched5.1 means 5⅓ innings, 5.2 means 5⅔ — the decimal counts outs
HHits allowed
RRuns allowedAll runs, however they scored
EREarned runsRuns that would have scored without a fielding error
BBWalks allowed
K or SOStrikeouts
HBPBatters hit by a pitch
HRHome runs allowed
ERAEarned run averageEarned runs per full game — calculator
WHIPWalks + hits per inningBaserunners allowed per inning — calculator
W / L / SVWin / loss / saveRarely tracked in youth ball
PC or PPitch countThe number that matters most for young arms

Fielding abbreviations

AbbreviationMeaningNotes
POPutoutsRecording the out directly — a catch, a tag, stepping on the base
AAssistsThrowing or deflecting the ball to the fielder who made the out
EErrorsA misplay a fielder should reasonably have made
TCTotal chancesPO + A + E
DPDouble plays
FLD%Fielding percentage(PO + A) ÷ TC — calculator

Fielders are also identified by number rather than name in play descriptions — 6 is the shortstop, 3 the first baseman, so a groundout reads 6-3. The full list is in baseball position numbers.

Softball box scores use the same abbreviations

Every abbreviation above means exactly the same thing in softball. Parents searching for what AB, BB or TB mean "in softball stats" are looking at an identical table — the differences between the sports are in the game (seven innings rather than nine, pitching distance, and a tenth fielder in slow-pitch), not in the notation.

The line score above the box score

Most box scores sit under a small grid showing runs per inning and three totals: R, H, E — runs, hits and errors for each team. That's the game's headline. A team that loses 7-2 while out-hitting the opposition usually has a big number in the E column.

A worked example

Say your player's line reads 3 2 2 1 1 1 under AB, R, H, RBI, BB, K, with one of the hits marked 2B.

That's an excellent game, and notice how much of it the batting average alone would have missed.

One box score is a snapshot. The value is in stacking them across a season, so a single 0-for-4 stops looking like the whole story and a quiet stretch shows up as a trend rather than a mood.

Where to go next

If you want the meaning behind each stat rather than just the abbreviation, the stats explained guide walks through every formula in plain English. If you'd rather record the game yourself than wait for someone else's box score, start with the free printable scorecard.

Ready to stop doing this by hand? MyBallPlayer tracks every stat automatically and charts the whole season. Get started or grab the free printable stat sheet.

Frequently asked questions

What is a box score in baseball?

A summary table of the game listing every player who appeared and what they did — one row per player, one column per statistic, with hitters and pitchers in separate blocks. It tells you what happened, while a scorecard records how it happened, play by play.

How do you read a baseball box score?

Read a hitter's line left to right as AB, R, H, RBI: four numbers reading 4 1 2 3 means four at-bats, one run scored, two hits and three runs batted in. Pitchers read as IP, H, R, ER, BB, K.

What does K mean in a box score?

K is a strikeout. A backwards ꓘ indicates a called third strike, where the batter did not swing.

What is the difference between R and ER for a pitcher?

R counts every run allowed. ER counts only earned runs — those that would have scored without a fielding error. ERA is calculated from earned runs only.

What does AB mean and why is it lower than the number of times my child batted?

AB is at-bats, which excludes walks, hit-by-pitch and sacrifices. A player who walks twice in four trips to the plate shows only two at-bats, which is why on-base percentage often tells a fuller story than batting average.

Are softball box score abbreviations different from baseball?

No. AB, R, H, RBI, BB, K, IP, ER and the rest mean exactly the same in both sports. The differences are in the game itself, not the notation.

What does R H E mean at the top of a box score?

Runs, hits and errors for each team — the game's headline totals, shown above the inning-by-inning line score.