Safeties & Position Play

01 — What this episode is

Four rule machines, one hide

When shooting balls is the wrong answer, what do you do instead, and what does it cost under each rulebook? That question is the whole episode.

Racks stop being run-outs the moment the balls stop cooperating. What separates the player who recovers from the player who donates is mostly a knowledge gap: what you may declare, what a foul costs, where the push-out lives, and how the same hide is priced in three different games.

A safety is four different rule machines wearing one name. In call-shot disciplines it is a declared alternative to calling a ball and pocket rule ¹. In 9-ball there is nothing to declare at all, and a legal pocket on a defensive shot keeps you at the table rule ¹. In APA it is a scored event on the scoresheet, fed into a handicap system rule ². And in 10-ball, the absence of a safety call turns an accidental pot into your opponent's choice of who shoots rule ¹.

The route: the four machines first (02), then a ten-item defensive vocabulary (03), seven interactive lab situations (04), the foul price list (05), frozen-ball law (06), clusters and tie-ups (07), intentional fouls (08), push-outs (09), pattern play (10), and league versus pro (11). The closing findings (12) hold only what survives the sources.

02 — The four rule machines

Same shot, four price lists

The same defensive shot is a declaration in one ruleset, a non-event in the next, and a scoresheet statistic in the third. Read your rulesheet before you pick your hide.

WPA: the declared safety exists only where shots are called. Rule 1.7 lets a shooter call "safety" instead of a ball and pocket, and play passes at the end of the shot rule ¹. The consequences differ by game. At 8-ball, balls pocketed on the called safety stay down (Rule 4.6) rule ¹. At 9-ball there is no call-shot provision at all: a defensive shot is simply a shot, and a legal pocket keeps the inning alive (Rule 5.5) rule ¹. At 10-ball the game is call-shot, but "there is no 'safety' call at 10-Ball" (Rule 6.5) rule ¹. At 14.1 everything pocketed on a safety spots (Rule 7.5) rule ¹.

CSI (BCAPL / USA Pool League): the calling rule, 1-17, applies to 8-ball and 14.1 only: "Safeties must be called verbally – gestures are not sufficient" rule ³. The Approved Rulings add two teeth. Call a ball and a safety together, pocket the ball, and your inning still ends, because "the safety takes precedence" over the called ball rule ³. And there is no prohibition against declaring a safety even when you do not intend to pocket a ball, which removes the accidental-pot argument before it starts rule ³.

APA: no call required. "A Defensive Shot is any shot taken without the intent to legally pocket a ball. The shooter's INTENT is the determining factor" (Team Manual §21, p. 32) rule ². The manual names four ethical types: Safety, Legal Contact Only, Picking Up the Cue Ball, and Intentionally Shooting the Wrong Ball rule ². NOTE 1 closes the loophole the other way: an attempted defensive shot that legally pockets one of your balls does not end your turn; keep shooting, and the shot is marked rule ². The glossary sets the legality floor: correct ball first, a rail after, and "Players with integrity call their safeties" rule ².

ACS: the WPA machine, reprinted. §8.17 defines the safety shot in call-shot games, §3.6 keeps balls down at 8-ball, and the 9-ball section carries no call-shot provision rule ⁴.

Read that as a cost map. In 8-ball, declaring is free insurance: the balls stay down and the turn passes cleanly rule ^{1 4}. In 9-ball there is nothing to declare rule ¹. In 10-ball the missing declaration means your defensive shot carries accidental-pot risk the 8-ball player never faces: a dropped ball is not a pocketed annoyance, it is the opponent's choice of who shoots rule ¹. That single line of rule text is why 10-ball safeties aim for distance and blockers instead of thin hides near pockets synthesis ¹.

That second table is the quiet tax collector. In 9-ball your defensive shot can quietly become offense: there are no called balls, so any legal pocket keeps you at the table rule ¹. In 10-ball the same accident hands the opponent the choice rule ¹. APA splits the difference: the accident keeps you shooting, but the scorekeeper marks it rule ². And in CSI 8-ball the declared safety wins even against your own good shot: the safety takes precedence and your inning ends rule ³.

03 — The defensive vocabulary

Ten safeties to master

Dr. Dave's September 2020 column puts the vocabulary in one place: ten named safety shapes, from the stop-and-hide to the kick-and-stick. They are instructional claims, not measurements, and they are the best available map of the territory. instructional ⁵

1. Stop and hide. "The most basic type of safety is a simple stop and hide." Aim at the stop-shot position and adjust the tip: "just drop it a bit" for pullback, "just raise it a bit" for forward roll ⁵.
2. Roll up and snuggle. "You can easily roll up on the 9 to snooker your opponent" ⁵.
3. Equal-separation hide behind blockers. Roll the cue ball and aim slightly thinner than a half-ball hit, leaving both balls far apart with blockers between ⁵.
4. Finesse equal-separation hides. Thin the hide further, accepting that you may leave "a chance to jump over the stripe for the win" ⁵.
5. Finesse fractional-ball hides. "Short stroke to control your speed" ⁵.
6. Separate and hide against the long rail. Leave distance between cue ball and object ball, both close to a long rail, with blockers in between ⁵.
7. Come into the line of blockers. Leave the cue ball touching or very close to the opponent's balls ⁵.
8. Thin-hit hide. Thin contact barely moves the object ball, and the cue ball's direction is very predictable ⁵.
9. Send the ball straight down table and hide. Distance plus blockers ⁵.
10. Kick-and-stick hide. A ball rolling nearly straight into a cushion rebounds with stun; the hide forces the opponent to go off two or more rails, with the object ball left off the cushion ⁵.

The ten sort into two families by what they force on the opponent. The first family (stop-and-hide, roll-up-and-snuggle, thin-hit hide, send-down-table) leaves the opponent a single difficult path at best. The second family (separate-and-hide, kick-and-stick) forces kicks off two or more rails: Neil's planning advice is to leave the reply where they "will have to kick 2 or more rails to hit the ob", and the kick-and-stick is built to "force your opponent to go off two or more rails" instructional ^{5 9}. The rail-count labels used in this guide's diagrams are shorthand for that split, not a formal taxonomy from any source synthesis.

04 — The lab

Seven situations on the table

Each situation proves one point: the hide you built, the pair you froze, the two-way that pays both ways, and the push-out that starts the rack's second shot. Toggle the table size; the routes compress, the rules do not.

05 — The price list

What failure costs

Every safety is priced by the same question: what does the opponent get when you fail, and what do they get when you foul?

The standard price everywhere is ball in hand. WPA Rule 5.7: "If the shooter commits a standard foul, play passes to his opponent. The cue-ball is in hand, and the incoming player may place it anywhere on the playing surface" rule ¹. ACS matches (§2.7) rule ⁴. APA is ball in hand anywhere with one exception: in 8-ball, a scratch on the break comes from behind the head string rule ^{2 14}. CSI is ball in hand anywhere in 9-ball and 10-ball rule ^{3 14}.

Fouling your way out of a game takes specific triggers. Ordinary strategic fouls never lose a game by themselves in any of the four rulebooks rule ^{1 2 3 4}. The triggers adjacent to safety play: at APA 8-ball, pocketing the 8 on a foul break is a loss of game, the only negative jackpot in the four rule ^{2 14}. At WPA 8-ball, an 8 pocketed on a foul shot gives the opponent options (re-spot with ball in hand, or a re-break), not a loss rule ^{1 14}. And at 10-ball the money ball always spots: "The 10-ball is spotted if it is driven off the table or pocketed other than on the final, winning shot of the game" (WPA Rule 6.8) rule ¹.

The ladder that caps intentional-foul chains is WPA Rule 3.13: "If a player fouls three times without making an intervening legal shot, it is a serious foul. In games scored by the Rack, such as 9-Ball, the fouls must be in a single Rack. Some games such as 8-Ball do not include this rule." The referee must warn a player arriving on two fouls rule ¹. The penalty is loss of the current rack (WPA §5.8, §6.10) rule ¹. ACS §6.14 carries the identical rule, including the two-foul warning duty, and §2.8 prices it: "the penalty is loss of the current rack" rule ⁴.

Two verified absences complete the ladder. CSI has no three-foul rule: the only "consecutive" provisions in its rulebook are the stalemate rules, found by full-text search rule ³. APA has none either: zero hits for "consecutive foul" in the Team Manual rule ². The practical reading: in WPA and ACS 9-ball and 10-ball, an intentional-foul chain is capped at two, and the two-foul warning means you cannot quietly build the ladder synthesis ^{1 4}.

Conceding the turn is priced differently too. APA lists Picking Up the Cue Ball as an ethical defensive shot, conceding the table for ball in hand rule ². The WPA has no such mechanism: its concession rule is about the match, "If a player concedes, he loses the match" (Rule 1.12) rule ¹. There, fouling is the only way to hand over the table without a legal shot synthesis ^{1 2}.

06 — Frozen-ball law

The freeze: goal and obligation

"Freeze-up" covers two ideas this guide keeps separate: the defensive goal of parking the cue ball where the opponent has nothing, and the legal obligations that attach to balls actually touching a rail or each other.

WPA law first. A ball touching a rail at the start of a shot is not considered driven to that rail unless it leaves the rail and returns, and "a ball is assumed not to be frozen to any rail unless it is declared frozen by the referee, the shooter, or the opponent" (Rule 2.7, Regulation 26) rule ¹. The frozen cue ball has its own peace treaty: "if the cue-ball is touching an object-ball at the start of the shot, it is legal to shoot towards or partly into that ball" (Rule 3.7), and getting the declaration before the shot is the shooter's responsibility rule ¹.

CSI is the strictest of the four: a frozen ball used for the cushion-contact requirement must leave its cushion and then contact a different cushion or another object ball first; and "an object ball is not considered frozen to a cushion unless it is declared frozen immediately prior to the shot and before the shooter is down on the shot" (Rule 1-19) rule ³.

APA requires declaration plus mutual verification by shooter and opponent, with a third party able to settle disputes (Team Manual §14, p. 52) rule ². ACS follows the WPA structure (Rule 6.7, Regulation 28) rule ⁴.

As a goal, the advice is specific: "If possible, try and freeze the cb to another object ball. But, unless you are at an advanced level, or actually, your opponent is, you generally don't need to freeze the cb, just get it stuck behind another ball but too close to jump" instructional ⁹. On the receiving end, Dr. Dave's March 2026 example shows what a good freeze is worth: the opponent freezes the cue ball to the 8, and "I don't have any great options on the 8 from there" instructional ⁸.

The jump cue sets the freeze's market price. A hide "too close to jump" is only a lock where jump cues are unavailable or the jumper is poor. APA non-Masters play bars jump cues entirely rule ^{2 14}; on the tours every player carries a legal jumper, so the same hide leaks probability to the jumper synthesis ^{2 14 5}.

One geometric habit from the same sources: an object ball within inches of the rail becomes, in Neil's phrase, "a 'big ball' to hit", kickable directly or off the rail, where a ball farther out must be hit directly instructional ⁹. From the shooter's side: "the worst place to leave the OB is about a ball off the cushion" instructional ⁵. A specific figure, about six inches, circulates as a rule of thumb from a forum post; it is not a measurement, so this guide says "within inches" and prints no number unverified ⁹.

07 — Clusters and tie-ups

Feeding the cluster, tying the rack

Clusters are where defense stops being a shot and becomes a plan: when to break them, when to feed them, and when to tie your opponent's problems into knots.

When to break out, from four independent sources collected on Dr. Dave's 8-ball page. Break clusters when an insurance ball is available, with as little speed as necessary instructional ^{9 10}. Byrne: "Beware of breaking a cluster toward an obstructed pocket"; and on low-percentage break-outs, "if you miss and spread the cluster you have solved your opponent's problem instead of your own. Think safety instead" instructional ¹⁰. APA's own coaching agrees from the league side: "If you tried to break out a cluster, and failed, you must stop! Play safe here", and do not shoot three of your open balls in and then play safe, because that hands the opponent the same weapon instructional ¹². The forum consensus rounds it out: "A cluster is absolutely THE BEST environment to play a safe into" anecdotal ¹⁰.

In 9-ball, cluster defense is a sequence, not a single shot. January 2018: when a run-out is not high-percentage, play defense as early as possible; draw back from the 5 for shape on the 6 for a strategic safety; hit the 6 into the 8 to break the cluster and hide the cue ball behind the 7; and get the cue ball close to the 7 to prevent a jump shot at the 6 instructional ⁶.

The tie-up play is the cluster's other door. The room has a one-word name for it; the word appears in no authoritative glossary or instructional source the research could find, so this episode calls the shot what the sources document: tie-up play unverified. The mechanism: "Sometimes your only safe or best safe is to just tie up several balls to make his run-out difficult. When doing this, don't tie up say the 6&7 if the 5 is right there to break them out" instructional ⁹. The companion habit: if you cannot break out a cluster with the object ball, leave yours where a future ball in hand can instructional ⁹.

APA codifies the most aggressive tie-up of all, deliberately shooting an opponent's ball, as an ethical, scored defensive shot (§21) rule ². The same act in WPA, CSI, and ACS play is an ordinary foul that feeds the three-foul ladder in WPA and ACS 9-ball and 10-ball rule ^{1 4}. In APA it is a routine, scored tactic; on the tours it is a priced foul synthesis ^{1 2 4}.

08 — Intentional fouls

Smart strategy, priced honestly

Dr. Dave's March 2026 column is the most recent published treatment, and its frame is blunt: "Some people might think of this as 'Dirty Pool,' but it is simply smart winning strategy." instructional ⁸

The documented situations, all 8-ball instructional ⁸:

1. Create a cluster by hitting the wrong ball first. "The most common type of intentional foul is where you hit the wrong ball first on purpose": unable to reach the 11 legally, tie up the 2 with the 5, leaving neither ball pocketed directly ⁸.
2. Block a pocket or dump a hanger. Send the 8 between the 1 and the 11 to take away a shot on the 1 and leave your hanger blocking the corner. The column then shows the reply cycle: the opponent replaces the hanger, and the shooter answers with another intentional foul, hitting the 1 first to dump the 2 ⁸.
3. Dump an opponent hanger. Hit an opponent ball first to dump their hanger and gain control of the pocket, despite conceding ball in hand. The documented counter: the opponent banks a ball into the hanger to regain control ⁸.
4. Dump the break-out ball. "If I intentionally foul by dumping the 1, my opponent can't use it to break out the 3-5 cluster" ⁸.
5. End-game tie-up and the stalemate option. Snookered on the 8 behind the 3, "the best play here is an intentional foul", repeating the tie-up until an easy kick off the upper rail wins; and the surrounded-hanger case where the passive alternative is a stalemate, the rack replayed from a break shot of a full rack ⁸.

Inside the ladder, the May 2018 column, inspired by a 2006 Luong Dung vs Vilmos Foldes sequence, shows intentional fouls used both ways: Bob fouls, hitting the 7 to tie up the 2; two fouls down, the answer is a foul that sends the 3 up table, conceding ball in hand but leaving "the run-out ... not trivial" instructional ⁷. The article never names the ruleset in force, so read it as played under a three-foul ruleset unverified ⁷.

The price list: every deliberate foul is a standard foul, so ball in hand anywhere in all four rulebooks, APA's 8-ball break-scratch exception aside rule ^{1 2 3 4}; loss of rack on a third consecutive foul in WPA and ACS 9-ball and 10-ball rule ^{1 4}; loss of game only in APA's 8-on-foul-break case rule ^{2 14}. Two modifiers move the calculation. Jump availability changes the deterrent value of every hide: where jumpers are legal, thin hides and short freezes leak probability to the jumper instructional ⁵ rule ^{2 14}; the comparative weighting is the guide's synthesis. And APA's scorekeeping makes the deliberate miss visible: "Deliberate misses must be marked in the Defensive Shots block of the scoresheet" (§20, p. 31), and intentionally missed shots for handicap manipulation are "a form of sandbagging" (§21, p. 32): legal, but it feeds The Equalizer rule ².

On the forums, the practical ceiling: "Many rule sets specify the 3 foul rule ... Taking the first foul is usually a last resort preferable only to selling it outright" anecdotal ¹⁷.

09 — Push-outs

Defense, announced in advance

The push-out is the one moment in rotation games where defense is announced before the stroke. Who has it, who chooses, and what it costs: that depends entirely on your rulesheet.

The push-out decision, in order

1. Hold it. The push belongs to the side shooting the rack's second shot, after a clean break rule ^{1 3 4}.
2. Count the balls that need moving. "Make sure and count how many balls are tied up or on the rail; then count how many balls are in your favor to run out. If it's 50/50, push!" instructional ⁹.
3. Ask the basic question before pushing or handing it back: is the opponent's realistic shot on the 1 hard enough that I want them shooting it? instructional ⁹.
4. Count the blockers. If more blockers than open balls, push and probably hand it back; the table is your ally instructional ⁹.
5. Leave the exact shot for the opponent if you do push. Moving the cue ball a few inches can be the whole difference between an easy reply and a coin flip instructional ⁹.
6. Respect the cage. APA league: there is no push at all; the second shot is just a shot rule ². Three-Point break events: the push may be barred after the break rule ^{4 14}.

Whoever holds the shot after the break holds the push: break dry in WPA or CSI 9-ball and 10-ball and the opponent can push you out of the game immediately; make a ball and you hold it yourself synthesis ^{1 3 15}. The internal break research documents the resulting doctrine and quotes Dr. Dave on the safety break: "Not recommended, unless you don't mind being stared down with disrespect" instructional ¹⁵. In APA there is no push at all: a dry break is simply the opponent's turn, which raises the relative value of break-and-run attempts in league play synthesis ^{2 14}.

10 — Pattern play

Position play with a longer horizon

The key ball you choose, the ball you bury, and the shape you leave yourself when the run-out dies: position play is safety play with a longer horizon.

Start at 8-ball. APA's Lesson 3, written for SL5 and above, defines the anchor of the plan: "A key ball is the easiest ball for you to shoot before the 8 that gives you the simplest shape for the 8", ideally a stop shot with straight-in shape to the side pocket instructional ¹². The planning order that follows: deal with problem balls first; keep a saver ball; plan the run-out from the 8-ball backwards; and when the plan dies, stop: "If you tried to break out a cluster, and failed, you must stop! Play safe here" instructional ¹².

Dr. Dave's summary matches and extends it: choose the key ball for the 8 very carefully; plan the run-out from the 8-ball backwards; deal with problem balls as early as possible; consider playing safe instead of a low-percentage shot; avoid "one ball hell"; and, hooked with no reasonable offensive or defensive shot, "consider an intentional foul where you pocket a problem opponent ball" instructional ¹⁰.

Byrne supplies the discipline behind both: "Don't risk missing in order to get perfect position on the next ball. Better to cinch the shot and get so-so position, which still leaves you with the option of playing safe"; avoid the narrow end of the position zone; and think three shots ahead instructional ¹⁰.

In 9-ball the contrast is sharper. The sharpest published statement is KellyStick's on Dr. Dave's 9-ball page: "In 9 ball it is not good enough to leave your opponent a tough defense like it can be in 8 ball but rather you really need to bury the next numbered ball and/or CB in a defense. Otherwise you just get 'defensed' back" anecdotal ¹¹. The principle it states is the one the instructional corpus agrees with: in a rotation game there is exactly one legal target, so soft tough looks get answered; bury the shooter or leave distance synthesis ^{11 5 9}.

10-ball's called pockets reshape the pattern calculus: no safety call exists (Rule 6.5), wrongful pockets hand the opponent the choice (Rule 6.6), and the money ball always spots (Rule 6.8) rule ¹. The out-pattern must be planned to called pockets with no bail-out synthesis ¹.

Shape for the safety is position play too: the January 2018 sequence is position play whose target is a safety, not a shot instructional ⁶. And end-game patterns are their own study: VENT-III covers common end-game patterns in 9-ball and 10-ball instructional ⁶.

11 — League vs pro

Who plays safe when

Who plays safe when? The documented answer is thinner than the folklore, and the gap itself is the finding.

APA institutionalizes defense. Defensive shots are a scored statistic feeding The Equalizer (§20–22) rule ²; safeties are "a legal shot and part of the game of pool" (Glossary) rule ²; and coaching tailors risk to skill: "For SL4s and under, it is usually just a race to see who makes their balls first" instructional ¹². Winner breaks and handicap scoring make every defensive shot count rule ^{2 14}.

Pros decide racks with safety exchanges, documented in tour reports: Kaci over Sanchez Ruiz in the 2023 World 10-Ball final: "His safety game is unbelievable and he deserved to win" observation ¹⁶. Szewczyk's Predator World 10-Ball win went through "a victorious safety exchange and a missed shot by his opponent" observation ¹⁶. Van Boening, 2023 World 10-Ball, day two: "misplayed position on the 3 ball [and] lost a safety exchange" observation ¹⁶. "Safety exchange" is recurring, standard match-report language in pro 10-ball observation ¹⁶.

Conditions move the same shots. WNT events add a mandatory forceful break, template racks, 60-second shot clocks (30 seconds after a handed-back push), and full jump-cue legality rule ¹⁴. None of that exists in APA league play: on tour, safety tempo is clocked and every hide faces a jumper synthesis ^{2 14}.

What is missing is the data. No dataset compares safety frequencies, conversion, or decision patterns between league and professional play unverified. The nearest measured evidence is computational: safety play modeled as a decision problem in robotics research academic ¹⁸, plus the internal break statistics: pros win roughly 58 to 61 percent of 8-ball racks on their break, with break-and-runs on roughly 52 to 57 percent measured ¹⁵. Those numbers bound how much of pro play is not run-outs: the space where safeties live synthesis ¹⁵.

12 — Conclusions

Conclusions that survive the sources

Five findings that would survive a re-check against the rulebook PDFs and the instructional corpus.

1. The safety is not one institution

   The same defensive shot is a declaration in WPA and ACS 8-ball, a non-event in 9-ball, a scored APA statistic, and, in 10-ball, an undeclared act where a wrongful pocket hands the opponent the choice of who shoots rule ^{1 2 3 4}. Read your rulesheet before you pick your hide.

2. Failure is cheap; failure chains are not

   A deliberate foul costs ball in hand everywhere, and only APA's 8-on-foul-break case loses a game outright. But WPA and ACS 9-ball and 10-ball add a ladder: three consecutive fouls lose the rack, and the referee must warn the player arriving on two rule ^{1 4}. CSI and APA have no such rule at all rule ^{2 3}. The chain you can afford depends on the rulebook in your bag.

3. Declaration rules change the geometry you should choose

   Where a dropped ball ends your turn (8-ball disciplines), declared safeties are free insurance. Where a dropped ball keeps you shooting (9-ball), thin hides near pockets carry upside. Where it hands the opponent the choice (10-ball, WPA 6.6), the same shot is a liability, and distance-plus-blocker hides dominate rule instructional synthesis ^{1 5}.

4. Jump-cue legality reprices every hide

   The corpus's repeated warning, thin hides that leak "a chance to jump over the stripe", matters where jump cues are legal, as on the tours; APA non-Masters play bars them, which makes short freezes structurally stronger in league than the same hide on tour instructional rule synthesis ^{2 5 14}.

5. The data gap is real and the honesty is the product

   No measured study of safety frequency, freeze-up effectiveness, or league-versus-pro decision patterns was found; what exists is tour-report language about safety exchanges, APA's codified scoring of defensive shots, and computational models of safety play unverified observation academic ^{16 18}. Two documented gaps ride in the registry: the CSI 10-ball wrongful-pocket provision was not extracted, and the room's one-word name for the tie-up shot is unverified slang. This episode prints what survives and flags the rest.

13 — Sources

The registry

Every claim in this episode resolves here. Rules quotes are verbatim from the official PDFs extracted on September 19, 2026; instructional quotes from the cited articles and FAQ pages.

Flagged: not verified

These claims appear in the research corpus but did not survive verification against a primary source. They are printed where relevant with the unverified tag; they are collected here so the gap is impossible to miss.

• ⚑CSI 10-ball wrongful-pocket handling. The research did not extract the CSI 10-ball provision this cycle; the episode cites the WPA equivalent (Rule 6.6) and marks the transfer unverified. Verify against the current CSI rulebook.
• ⚑The one-word room name for the tie-up shot. Room slang for a deliberate tie-up; no authoritative glossary or instructional source documents it, so this episode says "tie-up play".
• ⚑"About six inches" off the rail. Circulates as a rule of thumb from a forum post; not a measurement. This episode says "within inches" and prints no number.
• ⚑The ruleset behind the May 2018 ladder exchange. Dr. Dave's intentional-foul example never names the game or rulebook; read it as played under a three-foul ruleset.
• ⚑Freeze-up effectiveness statistics. No measured study of freeze-up conversion or effectiveness exists; the claims above are instructional.
• ⚑Safety frequency data. No dataset measures how often safeties occur at any level of play; frequency claims are folklore until measured.
• ⚑League-versus-pro decision comparisons. No comparative decision dataset was found; the league/pro contrast rests on rule text, coaching material, and match reports.
• ⚑"Intentional fouls are prohibited in tournaments." A secondary site's claim contradicted by all four rulebooks (APA legalizes them as scored defensive shots); refused above.
• ⚑Byrne quotes. Quoted on Dr. Dave's compilation page from Byrne's works; not verified against the original books.
• ⚑Three-foul example's ruleset. Same gap as the May 2018 exchange: treated as played under a three-foul ruleset, unnamed in the source.