Pool is not governed by one universal set of rules. “Pool” covers several disciplines, including 8-ball, 9-ball and 10-ball, and each has different rules for the break, legal shots, fouls and winning. The World Pool-Billiard Association (WPA) is the international governing body for pocket billiards and maintains standardized rules for these disciplines.
For beginners, the most important rule is simple: you must make a legal shot, not merely pocket a ball. A legal shot depends on the game being played and can involve hitting the correct ball first, contacting a cushion, avoiding fouls and, in some disciplines, calling the intended ball and pocket. Because casual “house rules” vary, the safest approach is to agree on the rules before the first break.
The basic rules of pool
Although pool has many disciplines, most games share a basic structure:
- The balls are arranged according to the discipline.
- Players determine who breaks.
- The breaker attempts a legal opening break.
- Players take turns.
- A player continues shooting while making legal scoring shots, subject to the particular game’s rules.
- A foul can give the opponent an advantage, often including ball in hand.
- The game or rack ends when the discipline’s winning condition is satisfied.
The WPA’s current World Standard Rules are effective from September 15, 2025, and cover the standardized international rules for pool disciplines.
That date matters because rules can change. A rule learned at a local pool hall years ago is not necessarily the same as the current international standard.
Pool is a family of games
The word “pool” can refer to several different games.
The most important disciplines for beginners are:
- 8-ball
- 9-ball
- 10-ball
- 14.1 continuous pool
- Other regional and specialized forms of pocket billiards
The WPA’s current rules specifically define separate sections for 8-ball, 9-ball and 10-ball, among other disciplines.
The difference is important because a rule that is correct in 8-ball can be completely wrong in 9-ball.
For example, in 8-ball you generally play a group of balls—solids or stripes—before attempting the 8-ball. In 9-ball, the balls are played in numerical order, beginning with the lowest-numbered ball remaining on the table.
8-ball rules for beginners
8-ball is probably the most familiar pool game to casual players.
Under WPA rules, the game uses:
- One cue ball
- Seven solid balls numbered 1–7
- Seven striped balls numbered 9–15
- The 8-ball
The two players or sides are assigned solids or stripes after the table becomes legally established under the rules. The objective is to legally pocket your entire group and then legally pocket the 8-ball.
The basic 8-ball sequence
A simplified example looks like this:
Break → establish a group → pocket your group → position for the 8-ball → legally pocket the 8-ball.
The critical word is legally.
Simply putting the 8-ball into a pocket does not automatically mean you have won. Depending on the circumstances, illegally pocketing the 8-ball can result in losing the rack under the applicable rules.
What happens on the 8-ball break?
This is an area where casual rules frequently differ from standardized rules.
Under the current WPA 8-ball rules, the break has specific requirements concerning the cue-ball position, the balls driven to cushions and balls pocketed. The consequences of various break outcomes are defined by the official rules.
That means players should not assume that statements such as:
“If you make the 8 on the break, you automatically win.”
are universally correct.
Local leagues, bars and recreational games may use their own rules. Tournament play follows the applicable competition rules.
What does “open table” mean?
After the opening break, the table can be open in 8-ball until a legal shot establishes the groups.
When the table is open, the shooter can generally play either a solid or a stripe as the legal first object ball, subject to the rules governing the shot.
Once the groups are established, the player must normally continue playing their assigned group.
This is why the break itself does not necessarily determine whether you are solids or stripes.
Calling shots in 8-ball
Under WPA 8-ball rules, shots are called. The player identifies the intended object ball and pocket when required by the rules. The rules also contain provisions for combinations, cushions and other details.
This differs from some informal versions of 8-ball.
At a casual table, players may agree that obvious shots do not need to be called. In a tournament, however, the governing rules take precedence.
If you’re playing socially, the important thing is to agree on the calling convention before the game begins.
The 8-ball is special
The 8-ball is not simply another object ball.
It is the final ball that determines the winner in standard 8-ball. You normally must first legally clear your group before attempting the winning 8-ball shot.
This creates a strategic difference from games such as 9-ball.
A player can be ahead in terms of remaining balls but still lose because their opponent has created a better route to the 8-ball.
That is why 8-ball involves substantial pattern planning.
9-ball rules for beginners
9-ball is structurally different.
The game uses:
- A cue ball
- Object balls numbered 1 through 9
The balls must be played in ascending numerical order. The cue ball must first contact the lowest-numbered object ball remaining on the table.
But there is an important strategic detail:
You do not necessarily have to pocket the lowest-numbered ball.
If the lowest ball is legally contacted first, another object ball can sometimes be pocketed as a result of the shot.
The 9-ball is the game-winning ball under the standard rules.
This means a player can sometimes win the rack without having personally pocketed every ball from 1 through 8.
Why 9-ball feels faster
The numerical sequence makes 9-ball more constrained than 8-ball.
In 8-ball, you generally choose among your available group of balls.
In 9-ball, the lowest-numbered ball determines the legal first contact.
That changes strategy dramatically.
A player must constantly ask:
Where will the cue ball finish after this shot?
The answer needs to account not only for the current ball but also for the next number.
This is why cue-ball positioning is particularly important in 9-ball.
The 9-ball break
The WPA specifies particular requirements for the 9-ball rack and legal break. If no ball is pocketed, the break must meet the applicable rail-contact requirement; the current rules also define specific consequences for different break outcomes.
The 9-ball break can therefore be an important competitive weapon.
But beginners should not assume that maximum power is automatically the best technique. Break performance depends on rack quality, table conditions, cue-ball control and the specific competition rules.
The push-out in 9-ball
One of the most distinctive 9-ball rules is the push-out.
After a legal break with no foul, the player may choose to play a push-out under the conditions specified by the rules. On this shot, certain ordinary requirements such as hitting the lowest-numbered ball first or making a rail after contact are suspended. The opponent then chooses who plays next if the push-out is legal.
For beginners, the concept is easier to understand as a tactical reset.
The player can deliberately leave the table in an awkward position rather than being forced to attempt a difficult normal shot.
The opponent then decides whether to accept the resulting position or return the shot.
10-ball rules
10-ball is similar to 9-ball in that the object balls are played in ascending numerical order.
The major difference is that 10-ball is a call-shot discipline under the WPA rules. The player who legally pockets the 10-ball when it is the only object ball remaining wins the rack.
The 10-ball rack uses balls numbered 1 through 10, with the 1-ball at the apex and the 10-ball in the middle of the triangle under the WPA rack specification.
This makes 10-ball a useful example of why you should never assume that a rule from one pool discipline automatically transfers to another.
What is a legal shot?
A legal shot depends on the discipline, but several basic principles appear repeatedly.
The player must strike the cue ball with the cue tip.
The cue ball must then make the required legal contact.
Depending on the rules, the shot may also need to:
- Pocket a ball
- Cause a ball to contact a cushion
- Satisfy a called-shot requirement
- Avoid contacting the wrong ball first
- Avoid illegally moving or touching balls
The exact requirements should always be checked against the rules of the discipline being played.
The “wrong ball first” foul
In games such as 9-ball and 10-ball, the lowest-numbered ball remaining must be contacted first.
If the cue ball hits another object ball before contacting the required lowest-numbered ball, that is a foul.
This rule is one of the biggest differences between numerical-order pool and 8-ball.
For example, suppose the 3-ball is the lowest ball remaining.
If you shoot directly at the 7-ball and the cue ball contacts the 7 before the 3, you have committed a wrong-ball-first foul.
You cannot simply argue that the 7-ball went into the pocket. The required first contact still determines whether the shot was legal.
What is “no rail after contact”?
In many standardized pool situations, if no ball is pocketed, the rules require a ball to contact a cushion after the cue ball makes legal object-ball contact.
This prevents a player from merely tapping balls together without producing meaningful movement.
The WPA rules explicitly define a No Rail after Contact foul and explain how it applies to the relevant disciplines.
For a beginner, remember the basic principle:
If you don’t pocket a ball, check whether the rules require a ball to reach a cushion.
The exact application depends on the game.
What is a foul?
A foul is a rules violation during a shot.
Common examples include:
- Hitting the wrong object ball first
- Failing to make the required legal contact
- Pocketing the cue ball
- Touching a ball illegally
- Double-hitting the cue ball
- Shooting while balls are still moving
- Causing an illegal ball movement
- Playing from an incorrect cue-ball position
- Violating a discipline-specific rule
The penalty depends on the game and circumstances.
The most common major consequence in standardized pool is ball in hand for the opponent.
What is ball in hand?
Ball in hand gives the incoming player the right to place the cue ball before taking the next shot, subject to the particular rules.
This is a significant advantage.
Instead of accepting wherever the previous cue ball finished, the player can usually choose a position that gives them a much better shot.
That is why fouls are strategically expensive.
A beginner may think that a small mistake only costs one shot. In practice, a foul can give an opponent an ideal cue-ball position and allow them to run several balls—or potentially the entire rack.
Cue-ball scratch
A scratch normally means the cue ball has been pocketed.
In standardized pool, this is generally a foul.
The precise consequences vary according to the discipline and situation, but the opponent commonly receives ball in hand.
One important beginner lesson is therefore:
Never focus so intensely on making the object ball that you forget where the cue ball is going.
A spectacular pot followed by a scratch can be a losing shot.
Illegal ball contact
You cannot normally touch or move balls with your hand, clothing, cue shaft or other equipment except where the rules specifically allow it.
Accidental contact can still have consequences.
This is particularly important when leaning over the table. Keep clothing, accessories and equipment under control so they do not disturb balls.
If a ball moves accidentally, stop rather than attempting to continue as though nothing happened. In formal play, the referee determines the applicable ruling.
Double hits
A double hit can occur when the cue tip contacts the cue ball more than once during a stroke.
This is particularly likely when the cue ball is close to an object ball.
The player must execute the stroke so that the cue tip does not illegally contact the cue ball again.
This is one reason a short, controlled stroke is often preferable to trying to force a difficult close-range shot.
Jumping the cue ball off the table
Jump shots and accidental jumps are another area where rules matter.
A cue ball that leaves the playing surface can result in a foul, depending on the circumstances and discipline.
Do not assume that deliberately jumping a ball is legal simply because you see professional players perform jump shots.
The equipment and rules governing legal jump shots can differ from informal play.
What happens after a foul?
The penalty depends on the discipline.
In many WPA pool situations, the incoming player receives ball in hand.
That can mean placing the cue ball anywhere on the table, subject to the applicable rules.
But not every foul produces identical consequences in every discipline.
For that reason, avoid the common assumption:
“Every foul in pool means ball in hand anywhere.”
That is too broad.
The correct penalty must be determined from the rules of the game being played.
What happens if you make a ball?
Again, the answer depends on the discipline.
In many pool games, legally pocketing the appropriate object ball allows the player to continue shooting.
But the implications vary.
In 8-ball, legally pocketing a ball from your assigned group normally allows you to continue.
In 9-ball, pocketing a legal object ball can also allow you to continue, but the numerical-order rule still applies.
In 10-ball, called-shot requirements add another layer.
The general principle is:
A successful pocket does not automatically make a shot legal.
The legality of the entire shot matters.
Can you hit a ball into another ball?
Yes.
Combination shots can be legal, provided the shot satisfies the rules.
For example, in 8-ball, you may use one object ball to contact another before the intended ball reaches the pocket, subject to the applicable requirements.
In 9-ball and 10-ball, however, the cue ball still has to make legal first contact with the lowest-numbered ball.
That means combinations are possible, but the order of contact remains important.
Can you use the cushion?
Yes.
Bank shots and cushion routes are legitimate parts of pool.
A ball can contact a cushion before entering a pocket, and the cue ball can also use cushions to reach the required object ball.
Cushion play becomes especially important when direct shots are blocked.
However, don’t confuse a legal bank shot with the no-rail rule. The relevant question is whether the shot satisfies the complete requirements of the discipline.
What is a safety?
A safety is a deliberately defensive shot.
Rather than attempting a low-percentage pot, the player tries to leave the opponent with a difficult position.
For example, you might send the cue ball behind another object ball so that the opponent cannot easily make a legal direct shot.
Safety play is completely legitimate.
At advanced level, it is one of the most important strategic aspects of pool because a player who can control the table defensively can force opponents into difficult decisions and increase the chance of receiving a favorable opportunity.
Why house rules cause so much confusion
Many recreational pool players learn the game through informal rules.
You may encounter rules such as:
- “You have to hit a cushion every shot.”
- “Any ball on the break determines your group.”
- “The 8-ball on the break is an automatic win.”
- “You must call every shot.”
- “A scratch behind the line means ball in hand only there.”
- “Three fouls means an automatic loss.”
Some of these rules may be appropriate under particular local rulesets; others are not part of the current WPA standard rules or apply only to particular situations.
The problem is not necessarily that house rules exist.
The problem occurs when players assume house rules are universal.
If you’re playing casually, agree on the rules before the break. If you’re playing competitively, identify the governing ruleset and follow it.
Pool rules vs. “bar rules”
The phrase “bar rules” usually refers to informal local conventions rather than a single internationally standardized ruleset.
There is no universal rulebook called “bar rules.”
Two venues can therefore play eight-ball differently.
One may require called shots. Another may allow slop shots. One may give ball in hand after every foul. Another may use a different local penalty. One may treat an 8-ball break differently from another.
If you want consistency, use a recognized ruleset such as the WPA rules rather than trying to infer the rules from previous games.
The rules that matter most for beginners
You do not need to memorize an entire rulebook before playing.
Start with these principles:
- Know which game you are playing.
- Know the winning condition.
- Know what ball you must contact first.
- Know whether shots must be called.
- Know what constitutes a foul.
- Know what happens after a foul.
- Know the break rules.
- Know what happens if the 8-ball or 9-ball is pocketed illegally.
- Do not touch or move balls illegally.
- Never assume another pool discipline follows the same rules.
These ten points will prevent most beginner disputes.
The difference between 8-ball, 9-ball and 10-ball
The most useful comparison is not the number of balls. It is how the rules determine the player’s next legal target.
| Rule feature | 8-ball | 9-ball | 10-ball |
|---|---|---|---|
| Object balls | 1–15 | 1–9 | 1–10 |
| Main order | Player’s assigned group | Ascending numerical order | Ascending numerical order |
| Groups | Solids or stripes | None | None |
| Winning ball | 8-ball | 9-ball | 10-ball |
| Called shots | Yes under WPA rules | Not generally required in the same way | Yes |
| Push-out | No standard 8-ball push-out | Yes after a legal break, under the rules | Yes, under the rules |
| Strategic emphasis | Group management and pattern play | Numerical sequence and cue-ball position | Numerical sequence plus call-shot precision |
The WPA’s current rules explicitly identify 10-ball as a call-shot discipline and 9-ball as a numerical-order game; 8-ball has its own group-based structure.
Why the rules change strategy
Rules are not just administrative details. They determine how players approach the table.
In 8-ball, you need to think about which group is easier to clear and how problem balls affect the eventual 8-ball shot.
In 9-ball, you need to think about the next lowest-numbered ball and where the cue ball must finish to reach it.
In 10-ball, you add called-shot requirements, which can make precise shot selection even more important.
This is why learning the rules can improve your game almost as much as practicing your stroke.
What beginners should agree before starting a casual game
If you’re playing outside a formal tournament, take 30 seconds before the break to establish:
- Which discipline you’re playing
- Which ruleset you’re using
- Whether shots are called
- What happens on the break
- What happens if the 8-ball is pocketed on the break
- Whether fouls give ball in hand
- Whether the cue ball can be placed anywhere after a foul
- How disputes will be handled
That short conversation can prevent an argument several minutes later.
Where to find the official rules
For serious competition, the WPA World Standardized Rules should be the starting point. The WPA identifies itself as the international governing body for pocket billiards and publishes the rules governing recognized pool disciplines.
The current rule document is particularly useful when a question concerns a detail that varies between games, such as the break, push-out, called shots, fouls or the treatment of the winning ball.
The most important rule to remember
Pool becomes much easier to understand once you stop treating “pool rules” as one rulebook.
First identify the discipline. Then learn its objective, legal first contact, break procedure, foul penalties and winning condition.
For a beginner, that is enough to avoid most serious misunderstandings. From there, the rules begin to explain the strategy: 8-ball rewards group management and pattern planning, 9-ball forces you to think in numerical sequence, and 10-ball adds call-shot precision. The rules are therefore not separate from good pool—they are what define the decisions you make at the table.
If you are learning from scratch, master one ruleset first, preferably the one used by the players or league you intend to join. Once those fundamentals become automatic, learning another pool discipline is considerably easier because you are adding a new tactical framework rather than relearning how to play cue sports from the beginning.