8-Ball Rules Explained in 5 Minutes (With Common Fouls)

The problem is that almost everyone plays by slightly different rules. “Bar rules” vary by region and friend group, and they drift further with every round of drinks. Even the written rulebooks disagree, mostly about the break.

This guide follows the current WPA Rules of Play (effective September 15, 2025), the world standardized rules the Billiard Congress of America also publishes. Wherever CSI rules (used by BCAPL and USAPL leagues) or APA league rules play it differently, it says so, and one table near the end lines all three up.

The rules work the same on any size of pool table, from a bar 7-footer to a tournament 9-foot.

The Rules in 30 Seconds

1. Rack 15 balls with the 8-ball in the center. Any ball can sit at the front, and WPA and CSI rules want a solid and a stripe on the back corners.
2. Break from behind the head string. You must pocket a ball or drive at least 4 object balls to a rail.
3. The table is “open” until someone legally pockets a ball after the break, and that ball decides solids or stripes. (APA exception: if only one group drops on the break, the breaker gets that group.)
4. Once groups are set, hit one of your group balls first on every shot. A ball must be pocketed or reach a rail.
5. Fouls give your opponent ball in hand anywhere on the table. Under WPA and APA rules, a scratch on the break is the main exception.
6. Clear all 7 of your group balls, then call a pocket and sink the 8-ball.
7. Outside the break, you lose if you pocket the 8 on a foul (a scratch, say), in the wrong pocket or before your group is cleared, or if you knock it off the table.

How to Rack in 8-Ball

The 8-ball goes dead center in the third row, and the rack sits on the foot spot. Place all 15 object balls inside the triangle rack (full racking guide here) with the apex ball on the foot spot (the small dot near the far end of the table).

Any ball can sit at the apex. WPA and CSI rules just say “apex ball,” and the APA doesn’t name one either, so putting the 1-ball up front is only a habit. Under WPA and CSI rules, the two corner balls at the base must be one solid and one stripe, and everything else goes in at random. APA rules fix only the 8-ball.

Align the bottom edge of the rack parallel to the short rail, then press the balls tight so there are no gaps. Lift the rack straight up carefully so the formation doesn’t shift, because a loose rack leads to a weak spread on the break.

Quality balls make a difference here. Phenolic sets like Aramith sit tighter in the rack and roll truer than cheap polyester sets, and our best pool balls roundup covers what’s worth buying if your set is chipped or yellowed.

How to Break

A legal break requires the breaker to pocket a ball or drive at least four object balls to a cushion. What happens after a short break depends on the rulebook. Under WPA rules the opponent can accept the table as it lies, re-rack and break, or make you re-rack and break again.

CSI rules drop the first option, so a failed break always gets re-racked. APA rules re-rack and let the same player break again, unless that player also scratched, in which case the opponent breaks. The APA also requires the cue ball to hit the head ball or the second row first, and it doesn’t allow soft or safe breaks.

The cue ball must be placed in the kitchen, the area behind the head string (the imaginary line across the table at the second diamonds from the head rail). You can place it anywhere behind that line, though not on it, since WPA rule 3.10 makes a cue ball on the line a foul. Most players break from slightly off-center for a better spread.

See our complete break technique guide for more on power and accuracy. If you play every week and still break with a house cue, a dedicated break cue with a harder tip will open the rack noticeably better.

Who breaks first is typically decided by a coin toss or lag. In a lag, both players shoot a ball to the far rail and back, and whoever stops closer to the head rail wins the lag and chooses who breaks. After the first game, WPA rules alternate the break, while APA rules give it to the winner of the previous game. CSI events set their own format, and house games do whatever the regulars are used to.

What Happens on the Break

If you pocket a ball on the break and don’t foul, you keep shooting. Under WPA and CSI rules the table stays “open” no matter what dropped. APA rules differ: if every ball you made comes from one group, that group is yours, and if both groups dropped, the table stays open.

A scratch on the break is a foul everywhere, but the penalty varies. WPA and APA rules give the incoming player ball in hand behind the head string, and from there they can’t shoot straight at a ball that’s also behind the line. CSI rules give ball in hand anywhere on the table.

The 8-ball on the break splits the rulebooks most. WPA and CSI rules let the breaker spot the 8 and keep shooting, or re-rack and break again. If the breaker also fouled, the opponent gets that choice instead. Under APA rules an 8 on the break wins the game, unless the breaker scratches or commits another cue-ball foul, which loses it.

Assigning Solids and Stripes

The table stays “open” after the break until someone legally pockets a ball on a non-break shot. While the table is open, you can hit any solid or stripe first, so a solid can be used to pocket a stripe or the reverse. The one ball you can’t hit first is the 8. All three rulebooks still let the 8 be part of a combination, as long as the cue ball doesn’t touch it first.

Once a player legally pockets a solid (balls 1-7) or stripe (balls 9-15) after the break, that group is theirs for the rest of the game. Their opponent gets the other group. Under WPA and CSI rules that ball has to be the one you called, and a safety can’t set the groups.

I’ve played in leagues where people still argue about this, and the reason is that the rulebooks disagree. Under WPA and CSI rules, three stripes on the break still leave you free to take solids by pocketing one on your next shot. In an APA match, those three stripes make you stripes.

Legal Shots and Gameplay

Once groups are set, you must hit one of your own balls first on every shot. After contact, either a ball must be pocketed or any ball (including the cue ball) must reach a rail. If neither happens, it’s a foul.

Shot calling is where the rulebooks split again. WPA and CSI rules make you call every shot except the break, though an obvious shot needs no announcement. CSI rules treat banks, kicks and combinations as never obvious, so those always need a call.

APA rules only make you call the 8-ball, which means a group ball that drops by luck counts. Bar games usually only call the 8, too. Under WPA and CSI rules, if you call one ball and a different one drops, your turn ends and that ball stays down.

You continue shooting as long as you legally pocket your own balls. Once you miss or foul, your opponent takes over. WPA and CSI rules also let you call “safety” before a shot, which ends your turn afterward even if a ball drops.

Fouls and Ball-in-Hand

A foul gives your opponent ball in hand, meaning they can place the cue ball anywhere on the table before their next shot. All three rulebooks use that penalty for fouls after the break. Some bars still play “behind the head string” on fouls, an older convention you’ll mostly see in casual games.

Common Fouls in 8-Ball

For a deeper dive on scratches and their penalties, see what is a scratch in pool.

Accidentally pocketing your opponent’s ball confuses a lot of players, but it is not a foul as long as you hit your own ball first. The ball stays down and your opponent benefits. You just don’t get to continue shooting (unless you also legally pocketed one of your own on the same shot).

The 8-Ball Shot

Once you’ve pocketed all 7 of your group balls, you go after the 8. You must call the pocket by pointing to it or verbally announcing which pocket you’re shooting the 8-ball into. APA rules have you mark the pocket, and if you forget and the 8 drops, your opponent can call loss of game.

A bank or kick shot on the 8 is legal, and so is a kiss off another ball, as long as the cue ball hits the 8 first and the pocket is called. A combination into the 8 doesn’t work, because the cue ball would touch another ball first, and pocketing the 8 on that foul loses the game.

How You Lose on the 8-Ball

• Pocket the 8-ball in the wrong pocket (not the one you called)
• Foul while pocketing the 8-ball, with a scratch as the classic case
• Pocket the 8-ball before clearing your group (the break has its own rules, covered above)
• Pocket the 8-ball on the same shot as your last group ball (CSI and APA rules spell this one out)
• Knock the 8-ball off the table (on the break, WPA and CSI rules spot it instead)

Under WPA and CSI rules, a foul on an 8-ball attempt doesn’t lose the game if the 8 stays on the table. Your opponent gets ball in hand and play continues. I’ve seen guys walk away from the table thinking they lost when the 8 was still sitting there, so play it out.

The APA is stricter on one point. Scratching or knocking the cue ball off the table while you’re shooting the 8 loses the game even if the 8 stays put. Missing the 8 entirely is only a foul in the APA, and your opponent just gets ball in hand.

Winning the Game

You win by legally pocketing all 7 of your group balls and then sinking the 8-ball in your called pocket without fouling. You also win when your opponent breaks one of the loss rules above, like scratching while pocketing the 8. Once you’re doing that a few racks in a row, you’ve probably outgrown the warped house cues. Our best pool cues for the money guide covers what to buy when you’re ready for your own.

WPA vs APA vs CSI 8-Ball Rules

The three rulebooks agree on the core of 8-ball: clear your group, then call and make the 8. They disagree on most of what happens around the break, and on how much you have to call.

Sources: WPA Rules of Play rules 1.7, 3.7, 3.10, 3.11, 3.13 and 4.2 to 4.10. On the league side, see CSI Official Rules 1-16, 1-22, 1-33 and section 2, and the APA game rules at rules.poolplayers.com. The three-foul rule belongs to 9-ball and 10-ball, and none of the three books applies it to 8-ball.

Bar Rules vs. Official Rules

Bar rules mostly split from the WPA and CSI books over calling shots and the 8 on the break, and the APA sides with the bar on both. That’s where most arguments start. Nobody writes bar rules down, so they shift from one bar to the next, and the table below lines up the common ones against the WPA and CSI books.

The “last pocket” rule is pure bar custom. In many bars, you have to sink the 8-ball in the same pocket where your last group ball went. None of the three rulebooks has that requirement, so in league play you call any pocket you want.

My advice: if you’re playing for money or pride, agree on the rules before you break. The WPA, CSI and APA all post their rules free online, so pull up whichever one your league uses on your phone and settle it there.

If the slop debate gets exhausting, try a rotation game instead. 10-ball requires a called shot on everything but the break, so there are no lucky pockets to argue about.

For more on what happens when you hit the wrong ball, see our breakdown on pocketing your opponent’s ball.

FAQ

Where do the balls go in an 8-ball rack?

The 8-ball goes in the center of the third row, and the apex ball sits on the foot spot. Any ball can be at the apex under WPA, CSI and APA rules, even though many players put the 1-ball there out of habit. WPA and CSI rules also require one solid and one stripe on the two back corners.

What is a legal break in 8-ball?

The breaker must pocket a ball or drive at least four object balls to the rails. If the break falls short, WPA rules let the opponent play the table as it lies or have the balls re-racked. CSI rules always re-rack, and APA rules re-rack for the same breaker.

What happens if you scratch on the break in 8-ball?

It’s a foul. Under WPA and APA rules your opponent gets ball in hand behind the head string and can’t shoot straight at a ball that’s also behind it. CSI rules give ball in hand anywhere on the table.

What happens if you sink the 8-ball on the break?

Under WPA and CSI rules it doesn’t win or lose. The breaker chooses to spot the 8 and keep shooting or to re-rack and break again. APA rules count it as a win, unless the breaker scratches or commits another cue-ball foul, which makes it a loss.

Do you have to call every shot in 8-ball?

Under WPA and CSI rules, yes: every shot except the break, though obvious shots don’t need to be announced. APA rules only require you to call the 8-ball, so a group ball that drops by luck counts. Bar games usually call only the 8, too.

Do you lose if you scratch on the 8-ball?

If the 8-ball goes in on the scratch, yes, under every rulebook. If the 8 stays on the table, WPA and CSI rules treat the scratch as a normal foul and give your opponent ball in hand. APA rules call any scratch while shooting the 8 a loss.

Related Articles

Keep going with how to play pool, 9-ball rules, 10-ball rules, cutthroat pool rules and bank pool rules. For setup and edge cases, see billiard games, how to rack pool balls, how many balls are used in pool, what happens if you hit your opponent’s ball in and what happens if you scratch on the 8-ball.