Eight-ball (often spelled 8-ball or eightball, and sometimes called spots and stripes, stripes and solids or, more rarely, bigs and littles or highs and lows) is a pool (pocket billiards) game popular in much of the world, and the subject of international professional and amateur competition. Played on a pool table with six pockets, the game is so universally known in some countries that beginners are often unaware of other pool games and believe the word "pool" itself refers to eight-ball. The game has numerous variations, including Alabama eight-ball, crazy eight, last pocket, misery, Missouri, 1 and 15 in the sides, rotation eight ball, soft eight, and others. Standard eight-ball is the second most competitive professional pool game, after nine-ball and for the last several decades ahead of straight pool.
Eight-ball is played with sixteen balls: a cue ball, and fifteen object balls consisting of seven striped balls, seven solid-colored balls and the black 8 ball. After the balls are scattered with a break shot, the players are assigned either the group of solid balls or the stripes once a ball from a particular group is legally pocketed. The ultimate object of the game is to legally pocket the eight ball in a called pocket, which can only be done after all of the balls from a player's assigned group have been cleared from the table.
The game of eight-ball is derived from an earlier game invented around 1900 (first recorded in 1908) in the United States and initially popularized under the name "B.B.C. Co. Pool" (a name that was still in use as late as 1925) by the Brunswick-Balke-Collender Company. This forerunner game was played with seven yellow and seven red balls, a black ball, and the cue ball. Today, numbered stripes and solids are preferred in most of the world, though the British-style offshoot, blackball, uses the traditional colors (as did early televised "casino" tournaments in the U.S.). The game had relatively simple rules compared to today and was not added (under any name) to an official rule book (i.e., one published by a national or international sport governing body) until 1940.:24, 89–90
Standardized Rules of Play 
American-style eight-ball rules are played around the world by professionals, and in many amateur leagues. Nevertheless, the rules for eight-ball may be the most contested of any billiard game. There are several competing sets of "official" rules. The non-profit World Pool-Billiard Association (WPA) – with national affiliates around the world, some of which long pre-date the WPA, such as the Billiard Congress of America (BCA) – promulgates standardized rules as Pool Billiards – The Rules of Play for amateur and professional play. Meanwhile, many amateur leagues, such as the American Poolplayers Association (APA) / Canadian Poolplayers Association (CPA), and the Valley National Eight-ball Association (VNEA, international in scope despite its historic name), use their own rulesets (most of them at least loosely based on the WPA/BCA version), while millions of individuals play informally using colloquial rules which vary not only from area to area but even from venue to venue.
A summary of the international rules follows (see the WPA/BCA or other leagues' published rules, which conflict on minor points, for more details).
The table's playing surface is approximately 9 by 4.5 feet (2.7 by 1.4 m) (regulation size), though some leagues and tournaments using the World Standardized Rules may allow smaller sizes, down to 7 by 3.5 feet (2.1 by 1.1 m), and early-20th-century 10 by 5 feet (3.0 by 1.5 m) models are sometimes also used.
- 1 and 9: yellow
- 2 and 10: blue
- 3 and 11: red
- 4 and 12: purple (TV: pink)1
- 5 and 13: orange
- 6 and 14: green
- 7 and 15: brown (TV: tan)1
- 8 - black
- Cue - white
- 1Special sets designed to be more easily discernible on television substitute a rather light tan shade for the normally darker brown of the 7 and 15 balls, and pink for the dark purple of the 4 and 12; these alternative-color sets are now also available to consumers.
To start the game, the object balls are placed in a triangular rack. The base of the rack is parallel to the end rail (the short end of the pool table) and positioned so the apex ball of the rack is located on the foot spot. The balls in the rack are ideally placed so that they are all in contact with one another; this is accomplished by pressing the balls together from the back of the rack toward the apex ball. The order of the balls should be random, with the exceptions of the 8 ball, which must be placed in the center of the rack (i.e., the middle of the third row), and the two back corner balls one of which must be a stripe and the other a solid. The cue ball is placed anywhere the breaker desires inside the "kitchen".
One person is chosen (by a predetermined method, e.g., coin flip, win or loss of previous game, or lag) to shoot first and break the object-ball rack apart. If the shooter who breaks fails to make a legal break (usually defined as at least four balls hitting cushions or an object ball being pocketed), then the opponent can call for a re-rack and become the breaker, or elect to play from the current position of the balls.
According to World Standardized Rules, if the 8 ball is pocketed on the break without fouling, the breaker may ask for a re-rack and break again, or have the 8 ball spotted and continue shooting with the balls as they lie. If the breaker scratches (pockets the cue ball) while pocketing the 8 ball on the break, the incoming player may call for a re-rack and break, or have the 8 ball spotted and begin shooting with ball-in-hand behind the head string, with the balls as they lie. (For regional amateur variations, such as pocketing the 8 on the break being an instant win or loss, see "Informal rule variations", below.)
A player (or team) will continue to shoot until committing a foul, or failing to legally pocket an object ball on a non-foul shot (whether intentionally or not). Thereupon it is the turn of the opposing player(s). Play alternates in this manner for the remainder of the game. Following a foul, the incoming player has ball-in-hand anywhere on the table, unless the foul occurred on the break shot, as noted previously.
Pocketing the 8 ball 
Once all of a player's or team's group of object balls are pocketed, they may attempt to sink the 8 ball. To win, the player (or team) must first designate which pocket they plan to sink the 8 ball into and then successfully pot the 8 ball in that called pocket. If the 8 ball falls into any pocket other than the one designated or is knocked off the table, or a foul (see below) occurs and the 8 ball is pocketed, this results in loss of game. Otherwise, the shooter's turn is simply over, including when a foul such as a scratch occurs on an unsuccessful attempt to pocket the 8 ball. In short, a World Standardized Rules game of eight-ball, like a game of nine-ball, is not over until the "money ball" is no longer on the table. This rule is unusual to some bar and league players, because in American, Canadian and many other varieties of bar pool, and in some leagues, such as APA, such a foul is a loss of game. This is not the case in World Standardized Rules, nor in some other leagues that use those rules or a variant of them, e.g. VNEA beginning with the 2008/2009 season, and BCAPL), and USAPL.
Any of the following results in a game win:
- A player legally pockets the 8 ball into a designated pocket, after all of that player's object balls have been pocketed
- The opposing player illegally pockets the 8 ball (e.g. before clearing all of that player's object balls, does so on the same shot as the last such object ball, or the 8 falls into a pocket other than the one that was designated)
- The opposing player knocks the 8 ball off the table.
- The opposing player commits any foul, including scratching the cue ball into a pocket, or knocking it off the table, in the course of a shot that pockets the 8 ball. (As noted above, a scratch or other foul while shooting for the 8 ball is not a loss of the game if the 8 is not pocketed or jumped from the table.)
- The shooter fails to strike one of his own object balls (or the 8 ball, if all of said object balls are already pocketed) with the cue ball, before other balls (if any) are contacted by the cue ball. This excludes "split" shots, where the cue ball strikes one of the shooter's and one of the opponent's object ball simultaneously.
- No ball comes into contact with a cushion or is pocketed, after legal cue ball contact with the (first) object ball (or 8 ball, if shooting for the 8).
- If an attempt is made at a pot in pool, the ball hits the pocket, bounces out and lands on the ground, the ball is placed in the pocket and the game continues.
- The cue ball is pocketed ("scratched")
- The shooter does not have at least one foot on the floor (this requirement may be waived if the shooter is disabled in a relevant way, or the venue has not provided a mechanical bridge)
- The cue ball is shot before all balls have come to a complete stop from the previous shot
- The cue ball is struck more than once during a shot
- The cue ball is jumped entirely or partially over an obstructing ball with an illegal jump shot that scoops under the cue ball
- The cue ball is clearly pushed (shoved slowly, rather than struck), with the cue tip remaining in contact with it more than momentarily
- The shooter touches the cue ball with something other than the tip of the cue
- The shooter touches any ball (with body, clothing or equipment), other than as necessary to move the cue ball when the player has ball-in-hand
- The shooter knocks a ball off the table
- The shooter has shot out-of-turn
- On the break shot, no balls are pocketed and fewer than four balls reach the cushions (in which case the incoming player can demand a re-rack and take the break or force the original breaker to re-break, or may take ball-in-hand behind the head string and shoot the balls as they lie)
Informal rule variations 
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In Canada there are a similar level and types of variation as in the US (see below). One particularly common feature of Canadian bar pool is the "hooked yourself on the 8" rule — failure to hit the 8 ball when one is shooting for the 8 is a loss of game, unless one was hooked (snookered) by one's opponent (even then, if a pocket is called for the 8, as opposed to "just a shot", i.e. a safety, failure to hit the 8 is an instant loss). Pocketing an opponent's object ball while shooting for the 8, even if the shot was otherwise legal, is also a game-loser, often even in local league play. "Split" shots, where the cue ball appears to simultaneously strike a legal and an opponent's object balls, are generally considered legal shots in informal games, as long as they are called as split shots, and the hit is in fact simultaneous to the human eye. A further Canadian bar-pool peccadillo is that a shot is a visit-ending (but not ball-in-hand) foul if one pockets one's called shot but also pockets another ball incidentally, even if it is one's own (however, if that secondary pocketing was also called, the shot is legal, regardless of the order in which the balls were dropped).
Latin America 
The racked balls are often loose, crooked and/or not exactly on the foot spot (it is not considered to matter), and the rack itself may be made of rubber, and flexible, making a tight rack physically impossible to achieve. Other than the 8 ball, other balls may be placed far more randomly than players in other areas would tolerate, with large clusters of solids together, and stripes with each other.
In most of Latin America, including Mexico, shots are un-called, as in British pool (i.e. slop shots count, a concept foreign to most American players other than APA league members). In many if not most areas (Brazil being an exception), fouls result in ball-in-hand behind the head string only, as in American bar pool (allowing for intentional scratches that leave the opponent a very difficult shot if all opponent balls are "in the kitchen", behind the headstring).
A common Latin American variant of "last-pocket" is that each player is allowed either one (or even two) cue ball scratches when shooting for the 8, which must be pocketed in the same pocket as the shooter's final object ball. Such fouls simply end the shooter's turn at the table and give the opponent ball-in-hand behind the head string; only the second (or third, respectively) such scratch is a loss of game (though scratching the 8 ball itself off the table or into the wrong pocket is an instant loss). This version is common even in US pool bars that are dominated by recent Latino immigrants. This requirement has a profound effect upon game strategy – it is effectively 5 times harder to run out – and most North American (and British, etc.) players are completely unprepared for it, unless they are last-pocket players. Players must be very mindful what they do with their last few balls, and common failure to get shape that allows for the last object-ball shot to set the player up for an easy 8 ball shot into the same pocket leads to long games with many bank, kick and kiss shots on the 8.
In some parts of Latin America, especially South America, the 1 ball often must be pocketed in the right side pocket (relative to the end of the table one breaks from), and the 15 ball must be pocketed in the other side pocket (left). This rule probably developed to make it harder to run out after the first shot. Position play takes a larger role in this variation, and a player's strategy must necessarily initially revolve around getting the 1 or 15 in and preventing this opponent from doing likewise. When racking the balls for this variation, the 1 and 15 balls are placed behind the 8 ball at the center of the rack, the 1 ball on the left and the 15 ball on the right (from the racker's perspective). Latino last-pocket is virtually the only version of eight-ball played in Mexico, other than in the Mexico–United States border area.
In Mexico, a minority of players rack with the 8 ball rather than the apex ball on the foot spot, a trait in common with British blackball/8-ball pool. Pocketing the 8 ball on the break shot is an instant win, as it usually is in American bar pool, but is not in the international rules. The only ball-in-hand (behind the head string) foul in Mexican pool is scratching the cue ball into a pocket; other fouls are simply loss-of-turn. Because Mexican pool, except near the US border, is almost always played on open-pocket pool-hall-style tables, rather than coin-operated tables that trap object balls, any of one's own balls pocketed on a foul are spotted (but how they are spotted varies widely, with the balls often placed against the foot cushion on the center string, and adjacent to nearby diamonds if more than one must be spotted, instead of on the foot spot, but sometimes even to the side at long rail diamonds, due to the influence of coyote, a Mexican variant of Chicago; foot-spot spotting is neither common nor uncommon.) Pool itself is not considered a very serious game in the country other than in the northern states; in most of Mexico, three-cushion billiards is the serious game, while pool is mostly played by youths, by groups of friends (including many young women) as a bar game to pass the time, and by older working-class men as an after-work activity. In many recreation halls, dominoes is more popular than pool.
In many bars in Brazil (and not an official rule), a foul is generally punished by pocketing the lowest-numbered ball of the opponent. In that case, the cue ball remains where it stopped, as ball-in-hand is not commonly used. Additionally, in the case of scratching the cue ball, the opponent places the cue ball in the kitchen, on the head spot, or most commonly anywhere inside the "D", indicating some British snooker and/or blackball influence.
New Zealand 
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New Zealand eight-ball in many respects is closer to British blackball, but with numbered balls being used. A "D" is drawn on the table above the baulk line (as on a snooker table) and the shooting player is required to place the cue ball within it on the break-off and after an opponent scratches. In some places, the "forward play" rule is followed: After a scratch, the player with ball-in-hand must shoot forward of the baulk line, i.e. towards the rack area, even if all legal balls are behind the baulk line. The "two-shot rule" of blackball may or may not be followed; this depends on individual players and/or pubs.
The "nomination" rule is unique to New Zealand: A player snookered on the 8 ball may nominate one of the opponent's balls (if any remain) to hit as an alternative, legal "ball on". However, the shooter is not permitted to pot (pocket) such a nominated ball – doing so results in a loss of game.
North Africa 
In North African countries (as in Latin America, but reversed), both the 1 and 15 balls must be pocketed in the sides, the 15 on the right and 1 on the left (relative to the end of the table one breaks from). The North African version of the informal game is always played "last-pocket". Ball-in-hand is not taken on fouls, and "bank-the-8" is a very common rule in addition to last-pocket.
United Kingdom 
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There are several colloquial blackball/8-ball pool variations, which – along with differences between published blackball and 8-ball pool rules (which differ in various ways) and American-style and international eight-ball rules – can be encountered by eight-ball players as a form of culture clash when playing against opponents who are more accustomed to UK pub pool, the two-shot rules being the most significant.
During game play, if the player fails to hit a ball of his designated group or he hits the opponent's ball with the cue ball, then the opponent receives 2 shots unless the opponent has pocketed all his balls and only the 8 ball remains, then the opponent will only get one shot. In case of such a foul, the game continues with the player playing the cue ball at the place where it stopped. If a Scratch occurs, then the opponent plays Ball-in-Hand but he is only allowed to place it anywhere in the D however he can play the cue ball in any direction. Knocking a ball (apart from the cue ball) off the table carries no penalty. Instead the misplaced ball is returned to its original place and the game continues.
If a Foul or a Scratch is occurred while playing the 8 ball, as long as opponents has at least 1 ball of his group present on the Table and the 8 ball is not pocketed the game continues and the opponent gets the chance, If the cue ball is scratched, the opponent player gets 2 chances, but the ball has to be placed behind the break line, but if a foul occurs, the cue ball continues to stay there and the opponent gets 2 chances before the opponent can play(irrespective of if the player pots any of his balls in the first chance). the opponent also gets 2 chances if a player scratches. But if a player has only 8 ball left and the opponent sink his last solid/stripe ball with cue ball and if there is no ball in hand rule the player loses the game. And if the 8 ball is the only ball on the table and if the player commits any kind of foul the game is over and the opponent wins.
United States 
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Most commonly of all in American bar pool, it is sometimes required that all shots be called in detail, as to what balls and bank/kick cushions will be involved in the shot, with the shot considered a turn-ending (but not ball-in-hand) foul if not executed precisely as planned (and a loss of game if the "foul" shot pocketed the 8 ball). Contrariwise, some Americans hold that nothing other than the 8 ball has to be called in any way — "slop" counts.
In informal amateur play in most areas, the table will only be considered open if no balls were pocketed, or an equal number of stripes and solids were pocketed, or the cue ball was scratched (into a pocket or off the table), on the break; if an odd number of balls were legally pocketed, such as one solid and two stripes, or no solids and one stripe, the breaker must shoot the balls that were pocketed in the greatest quantity (stripes in these examples). The table is almost never considered so open as for it to be legal to use a ball of the opposite suit, much less the 8 ball, as the first ball in a combination shot while the table is open (despite this being perfectly legal in WPA World Standardized and many US league rules). In non-money games it is fairly common for a foul break in which the rack was not struck at all (e.g., due to a miscue) to be re-shot by the original breaker.
Fouls, in common bar pool, that are not cue ball scratches generally only cause loss of turn, with cue ball left in place (even if it is hooked). Even in the case of a scratch, this only results in ball-in-hand behind the head string. Regionally, there is a great deal of bar pool variation in the handling of fouls while shooting at and/or pocketing the 8 ball. In some cases any foul while shooting at but not pocketing the 8 is a loss of game, in others only a foul while otherwise successfully pocketing the 8, and in yet others only certain fouls, such as also sinking an opponent's ball or touching the 8 ball and scratching.
What is considered a foul further diverges from established, published rulesets. Scoop-under jump shots are usually considered valid (these are fouls in WPA and most league rules, as they are double-hits, though few players realize it). When a cue ball is frozen or near-frozen to an object ball, shooting it dead-on, in line with both balls, is a foul in formal rulesets (as another kind of double-hit), but is generally tolerated in bar pool.
Other US bar pool oddities varying from area to area include: Knocking the cue ball off the table on the break may be an instant loss; scratching on the break may be an instant loss; pocketing the 8 ball on the break (without scratching) may be either an instant win or instant loss (the latter being a rare variant); no safeties may be allowed at all – all shots may be required to be at least vaguely plausible attempts to pocket a legal ball; all jump shots may be banned; massé shots may be banned; it may be illegal to use the 8 ball in any way in combinations, caroms or kisses; the 8 ball may be required to be pocketed "cleanly" in the sense of no contact with other object balls (even if the kiss shot can be accurately called); failure to hit one of one's own object balls (or the 8 if shooting for the 8) may be considered a "table scratch" that gives the opponent a shot in-hand from behind the head string; failure to hit the 8 if shooting for the 8 may be a loss of game; and a "split" shot, where the cue ball appears to simultaneously strike a legal ball and an opponent's object ball, may be considered a legal shot, as long as it is called as a split shot, and the hit is in fact simultaneous to the naked eye.
"Bank-the-8" is a common American amateur variation, especially on coin-operated bar tables (because it usually makes the game last longer), in which the 8 ball must be banked off one or more cushions (kick shots may also qualify in some versions), into the called pocket; either player may suggest bank-the-eight at any time before or during the game, and the other may accept or refuse; all other rules apply as usual. Playing bank-the-eight may be considered rude if there is a long line of players waiting to use the table.
A similarly-motivated variant is "last-pocket", in which the 8 ball must be pocketed in the same pocket as the shooting player's last object ball (i.e., each player may be said to eventually "own" a pocket in which their 8 ball shot must be played if they have already run out their suit); all other rules apply as usual. This variant is popular in Mexico.
Due probably to the influence of nine-ball, in which the 1 ball must be the apex ball of the rack, most American bar players traditionally rack a game of eight-ball with the 1 ball in this position. Racking is also typically done solid-stripe-solid-stripe-solid along the two sides of the rack, resulting in solids being on all three corners. This is not a legal rack in World Standardized Rules, nor any other notable league ruleset other than APA.
Derivative games and variants 
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British-style variant 
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In the United Kingdom, eight-ball pool (and its internationally standardized variant blackball) as an overall rather different version of the game has evolved, influenced by English billiards and snooker, and has become popular in amateur competition in Britain, Ireland, Australia, and some other countries. As with American eight-ball, there are multiple competing standards bodies that have issued international rules. Aside from using unnumbered object balls (except for the 8), UK-style tables have pockets just larger than the balls, and more than one type of rest is typically used. The rules significantly differ in numerous ways, including the handling of fouls, which may give the opponent two shots, racking (the 8 ball, not the apex ball, goes on the foot spot), selection of which group of balls will be shot by which player, handling of frozen balls and snookers, and many other details.
Eight-ball rotation 
The hybrid game eight-ball rotation is a combination of eight-ball and rotation, in which the players must pocket their balls (other than the 8, which remains last) in numerical order.
See also 
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- Shamos, Mike (1999). The New Illustrated Encyclopedia of Billiards. New York City, NY, US: Lyons Press. ISBN 1-55821-797-5
- Jewett, Bob (February 2002). "8-Ball Rules: The Many Different Versions of One of Today's Most Common Games". Billiards Digest Magazine: 22–23.
- Hickok, Ralph (2001). "Sports History: Pocket Billiards". Retrieved 2006-12-13.
- Shamos, Mike (1995–2005). "A Brief History of the Noble Game of Billiards". Billiard Congress America. Retrieved 2006-12-13.
- Pool Billiards – The Rules of Play (PDF). World Pool-Billiard Association. January 1, 2008. Retrieved March 21, 2012.
- See for example: Mauro, Ted (2007). "Billiard Rules? Bar Rules, League Rules, Which Rules Are Straight Eight?". Pool-Billiards-Game.com. Pueblo, Colorado: self-published. Retrieved 2009-06-13. Many other blogs and offline personal writings can confirm this author's take on the matter, but little authoritative has been written on the subject, as "bar pool" is of little consequence in the world of organized pool.