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WPA (World Pool-Billiard Association)

Official World 9-Ball Rules.

Quick Verdict

"Don't have time for the full breakdown? Here’s the "too long; didn't read" for your next match: The Goal: Hit the lowest number on the table first. Pot the 9 to win. The Break: Hit the 1-ball first. At least 4 balls must hit a rail (or one gets potted). Push Out: Only happens once, right after the break. You can hit anything, but your opponent can give the shot back to you. Fouls: Hit the wrong ball first? Foul. No rail after contact? Foul. Scratch? Foul. The Penalty: Opponent gets ball-in-hand anywhere on the table."

1. The Rack & The Break

We use nine balls (1 through 9) and the cue ball. They’re racked in a diamond shape. The 1-ball sits at the front (on the foot spot) and the 9-ball sits right in the middle. The rest? Random.

To be a legal break:

  • You must strike the 1-ball first.
  • You have to either pocket a ball or drive at least four object balls to a rail.
  • If you don't meet those requirements, it’s a foul. In 9-ball, a foul on the break means the incoming player gets ball-in-hand anywhere—not just from behind the baulk line like in some 8-ball variants.

2. The "Push Out"

This is the most misunderstood rule in the game. Right after a legal break, the person shooting has the option to "Push Out."

  • You must announce it.
  • On this one shot, you don't have to hit any ball or any rail.
  • If you pot the 9 on a push-out, it gets spotted.
  • The Twist: After you push out, your opponent decides. They can either take the shot as it lies or say, "No thanks, you play it," and give it back to you. Use this to escape a bad layout after the break.

3. Legal Shots & Continuing Play

Every single shot requires you to hit the lowest numbered ball currently on the table first.

  • You don't have to call your pocket. "Slop" counts. If you're aiming for the 2 and it wobbles out but knocks the 7 into the corner, you keep shooting.
  • If you pot the 9-ball at any time (as long as you hit the lowest ball first), you win the rack. This includes "Golden Breaks" or caroming the 1-ball into the 9.

4. Standard Fouls

9-ball is a game of "Ball-in-Hand." If you foul, your opponent picks up the cue ball and puts it wherever they want.

  • Wrong Ball First: You hit anything other than the lowest number first.
  • No Rail: After the cue ball hits the object ball, something (the cue ball or any object ball) must hit a rail or go into a pocket.
  • The Scratch: Cue ball goes in the hole.
  • Balls off the Table: If an object ball flies off, it stays off (except the 9-ball, which gets spotted).

5. The "Three-Foul" Rule

This is the "Dad" wisdom coming out: don't be lazy. If you commit a foul on three consecutive shots in the same rack, you lose the game immediately. Usually, a referee or opponent has to warn you when you're on two fouls. If they don't warn you, the third foul doesn't count as a loss—but don't rely on that. Just hit the right ball, mate.

Rule Comparison: WPA vs. Pub/Social

If you’re comparing how you play at home versus how the pros do it, here’s how the gear and rules stack up.

At the end of the day, 9-ball is about precision. In 8-ball, you can usually hide behind a cluster of your own balls. In 9-ball, there's nowhere to hide. You either hit the target or you're watching from the chair.