How to Keep a Baseball Scorebook

Basics · By 4Baseball Staff · September 20, 2026 · 5 min read

Position numbers, the standard notation, how to score a half inning play by play, and how to prove a box score at the end of the game.

Somebody has to keep the book. In most rec leagues that somebody is whichever parent made the mistake of sitting closest to the dugout. The good news is that scorekeeping is a small, learnable language — about twenty symbols and one counting system — and once it clicks you can reconstruct an entire game from a single page.

A useful thing to understand before you start: the Official Baseball Rules define the statistics but not the shorthand. Rule 9 tells you what counts as a hit, an error, a stolen base or a sacrifice. It says nothing at all about writing 6-4-3 or a backwards K. That notation is convention — near-universal convention, and published in teaching form by Little League and USA Softball, but convention nonetheless. Where scorers differ, nobody is breaking a rule.

Print our blank scoresheet if you want to follow along on paper.

The nine numbers

Everything rests on this. Each defensive position has a number, and it never changes. These are not jersey numbers.

The two that catch beginners are 5 and 6. Third base is 5, shortstop is 6 — they are not in left-to-right order. Learn those two and the rest follow.

In a ten-player lineup, 10 denotes a short fielder or fourth outfielder, which is how slow-pitch softball books handle the rover. A designated hitter is just DH.

The symbols

A working set, most of which Little League publishes directly:

• K — strikeout. A backwards K conventionally means the batter took strike three without swinging.
• BB — base on balls. HBP — hit by pitch.
• 1B, 2B, 3B, HR — single, double, triple, home run.
• F8 — fly out to centre field. P8 is a pop-up, L8 a line drive, to the same fielder.
• E6 — error on the shortstop.
• FC — fielder's choice.
• SB — stolen base. WP — wild pitch. PB — passed ball. DP — double play. RBI — run batted in.
• BK — balk. Little League notes that its own books use IP for illegal pitch in the Major Division and below, and BK from Intermediate 50/70 upward.

Anything with a hyphen is the ball's route between fielders, in order. 6-3 is a ground ball to the shortstop who threw to first. 5-3 is the same play from third base. 6-4-3 is the classic double play: shortstop to second baseman to first baseman.

Be aware that governing bodies do not agree on every symbol. USA Softball's official scorebook uses Kc for a called third strike rather than a backwards K. Pick a convention, use it consistently, and write a key in the margin if your book will be read by somebody else.

Scoring a half inning

Each batter gets a small square. The rows are the batting order, the columns are the innings. Inside each square is a little diamond representing the four bases.

Say the visiting team bats in the first.

1. Leadoff hitter grounds out to short. In his square, write 6-3. That is one out. Note it — most scorers put a small circled 1 in the corner of the square.
2. Second batter singles to right. Write 1B9, and draw a line along the bottom-right edge of the little diamond from home to first. The line shows how far he got; the notation shows how he got there.
3. Third batter doubles to right. In his square, 2B9, and draw his path from home to first to second. The runner from first comes all the way around to score — so in that runner's square, complete his path around the diamond, fill the diamond in to show a run scored, and mark a 6 at home plate to record who drove him in. In the third batter's square, note RBI.
4. The runner on second is thrown out stealing third. That is 2-5: catcher to third baseman. Two out.
5. Fourth batter strikes out looking. A backwards K. Three out — draw a line under the last square or mark the inning closed, whichever your book prefers.

Everything a box score needs is now on the page: three outs, one run, two hits, one RBI, one caught stealing, one strikeout.

If you want pitch-level detail, most sheets have small boxes inside each square. Mark B for ball, S for strike, a hashmark or F for a foul. That is also how you produce an accurate pitch count, which matters enormously in youth baseball — see our guide to pitch counts and arm care.

Hit or error is a judgment call, and it is yours

Rule 9.01(a) gives the official scorer sole authority over decisions that involve judgment, such as whether a batter reached on a hit or an error. Little League's guidance mirrors this for its own leagues.

Two limits come with that authority. The scorer may not make a decision that conflicts with the playing rules or with an umpire's decision, and the scorer does not tell anyone that a batter is hitting out of turn. You are a recorder, not a second umpire.

The standard you are applying, when you judge whether a fielder should have made a play, is what the rulebook calls ordinary effort — what a fielder of average skill in that league should manage, given the field and the weather. In a rec league that is a genuinely forgiving standard, and it should be.

Proving the box score

This is the part that makes scorekeeping feel like accounting, and it is the best error-check ever devised. Rule 9.03(c), "How to Prove a Box Score", says a box score balances when, for each team:

At-bats + walks received + hit batters + sacrifice bunts + sacrifice flies + batters awarded first base for interference, obstruction or a shift restriction violation

equals

that team's runs + players left on base + the opposing team's putouts.

Little League publishes the same formula with its own small variation for its rules.

The logic is simple once you see it: every batter who came to the plate has to end up somewhere. He scored, he is still on base, or somebody got him out. If the two sides do not match, you have dropped a plate appearance or miscounted an out, and the gap tells you roughly where to look.

Do this before you leave the field, while you can still remember the seventh inning.

Turning a scorebook into stats

Once the book balances, the numbers fall out of it. Feed the totals into our stat calculator for batting average, on-base percentage, slugging, OPS, ERA and WHIP, with a seven-inning setting for softball and youth ball.

A last piece of advice: keep the book in pencil, write smaller than feels natural, and do not panic when you miss a play. Ask the other scorer — the other team is keeping one too, and comparing books between innings is a long-standing and entirely respectable tradition.

Sources

• Official Baseball Rules, 2026 Edition, Rule 9, The Official Scorer (Office of the Commissioner of Baseball)
• Little League — What's the Score? The Basics of Scorekeeping
• USA Softball — Official Scorebook