The Baseball Rules & Official Scoring Trivia Challenge
A trivia book for people who argue about baseball. Every question is a real ruling, every answer is explained, and every explanation cites the rule that settles it — so you don't just guess, you learn why you were wrong.
The shelf is full of "1,001 baseball trivia" books padded with stale records and unsourced claims. This one is built on the single body of baseball knowledge that doesn't rot: the Official Baseball Rules — how the game is actually played, and how an official scorer actually rules.
Three things make it different. Every answer carries an explanation, so the book teaches rather than quizzes. Every explanation cites the governing rule, so a reader can check us — and win the argument at the bar. And it is built as a game: questions are laddered Rookie → Veteran → All-Star → Hall of Famer, worth 1, 2, 3 and 5 points, with a scorecard at the end of every chapter and a season scorecard at the back.
The book also has a sibling. Its starting question bank came from the HardballRules trivia app — questions vetted by working official scorers — and the app is being rebuilt for relaunch within the next six months. The book stands entirely on its own; when the app returns, each one is a natural front door to the other.
Chapters follow the rulebook's own topics. Inside each, questions climb the difficulty ladder, answers sit at the end of every tier, and the chapter closes on a scorecard.
The book keeps score. Every question has a YOUR CALL box — you commit an answer in pencil before you turn the page, which is the difference between knowing a rule and thinking you do. Each chapter prints a par score — 70% of the points on offer — and your total converts to a rank using the same four names as the difficulty ladder.
Worth being straight about the scope: only one chapter, Official Scoring, covers the ground an official scorer actually rules on. The other thirteen are the working knowledge of umpires, players, managers and grounds crews. Par is a target to beat, not a professional standard — nobody is expected to run the table.
Front matter: scoring, beating par, the "Three Outs" mode, head-to-head play, and carrying totals into a season.
Each chapter opens with original black-and-white artwork and a short essay on what those rules are really about. The art is deliberately atmospheric rather than diagrammatic — no logos, no players, nothing that dates.
Nothing separates a casual fan from an official scorer faster than the word "error." It is not a judgment about how a play looked — it is a narrow finding under Rule 9.12, turning on two ideas: ordinary effort, and whether the misplay actually cost something. A bobble that costs nothing is not an error.
Advancing is not always earned and being put out is not always your fault. This chapter covers awarded bases, the runner's duty to touch and return, when a run counts against the third out, and the difference between a steal and defensive indifference.
The umpire's authority is broader than most fans assume: Rule 8.01(c) empowers them to rule on anything the book does not cover, and judgment calls are final. This chapter is about who may decide what, and when it is already too late.
In a lengthy rundown play, the shortstop handles the ball four times including the eventual tag out of runner. How many assists will the official scorer award the shortstop?
No matter how many times that a fielder handles a ball during a rundown, he can only be credited one assist.
Rule 9.10(a)(1)
Two outs, runners at first and second. Batter singles to right. The runner at second stops at third but scores when the RF makes an errant throw. The other runners move up to 2B and 3B. A single scores two more and a flyout ends the inning. How many of the 3 runs are earned?
Two runs are earned, one is unearned. If you take away the throwing error, the situation would have been bases loaded with two outs. A single to left-center field would likely score two while that third run would not have scored from first on the hit.
Rule 9.16(a)
With a runner on 1B and two out, the batter lines a single to right. Runner holds up because it looks like the ball could be caught. The RF throws behind the runner at 1B but the ball goes into the stands. Where do the umpires place the runners?
A runner may not advance beyond the base he is entitled to on a dead ball. If the runner from 1B was on 2B when the wild throw was made, then two bases would be awarded and that runner would score. Umpires note runner location at the time of the wild throw.
Rule 5.06(b)(4)(G) Comment
If a player bats out of order and reaches base, when does the opposing team have to make an appeal?
An opposing team would have to appeal a player batting out of order before the very next pitch is thrown.
Rule 6.03(b)(3)
At what point does an umpire assume responsibility for whether or not a game is called off due to weather?
Once the umpire has the home team's lineup card in hand, he has the authority to cancel a game due to weather.
Rule 4.03(e) · Rule 4.04(a)
In a walk-off situation, a runner on second scores when the batter hits a ball down the line that goes into the stands on a bounce. Batter touches first and leaves the field. What does the batter get for his effort?
Even though the ball bounced into the stands, batter is credited with a single because he never touched second base.
Rule 9.06(f) · Rule 9.04(a)(1)
Every chapter ends on a box-score-style scorecard with three player columns, a par score to beat and a rank ladder. A Season Scorecard at the back turns the whole book into one season. Both are also free printable sheets, so the book survives being played more than once.
Chapter scorecard — printable edition
Season scorecard — all chapters, one rank
The paperback wrap — back cover, spine and front — is built to print specification at 6×9, with the spine sized to the actual page count.
Concept cover; the interior is laid out and buildable today.
Paperback is the first format, not the only one. At 435 pages the book sits inside the range for a 6×9 hardcover, which prints from this same interior and needs only its own case wrap — the obvious gift and shelf edition for a reference-style book people keep. A Kindle edition follows, with one honest caveat: the write-in scorecards are the part that doesn't translate to a screen, which is what the free printable sheets are for.
A wrong answer in a rules book is fatal to it. So correctness here is a process, not a promise.
Every question is checked against the text of the Official Baseball Rules by two independent adversarial passes whose job is to disprove the answer and quote the governing text for any failure. The second pass is not shown the first one's conclusions. Nothing reaches the page on a single reviewer's say-so.
Every question carries its governing rule reference, so a reader can check the book instead of trusting it. The rulebook is revised annually, so the edition each question was verified against is recorded — the book can be maintained against future changes rather than quietly going stale.