Pool Fouls Explained: A Quick-Reference Guide for Heyball and 8-Ball

Nothing kills the flow of a frame like a dispute over a foul nobody's 100% sure about.

This guide breaks down the standard fouls in Heyball and 8-Ball under World Pool-Billiard Association (WPA) rules, so next time something happens at the table, you can settle it in seconds.

In both games, a standard foul means the same thing: your turn ends and your opponent gets ball in hand — they can place the cue ball anywhere on the table before their next shot.

8-Ball Fouls

Standard fouls (opponent gets ball in hand):

• Wrong ball first — your cue ball must contact a ball from your own group (solids or stripes) first, unless the table is still open.
• Cue ball scratch — potting the cue ball, or knocking it off the table entirely.
• No rail after contact — if you don't pot a ball, either the cue ball or an object ball must reach a cushion after contact.
• Touched ball — accidentally touching or moving any ball with your hand, cue, clothing or chalk.
• Double hit / push shot — the tip stays in contact with the cue ball too long, or strikes it twice on one stroke.
• Balls still moving — shooting before all balls have come to a complete stop.
• No foot on the floor — at least one of your feet must touch the ground when you strike.
• Playing out of turn or slow play (where a shot clock is in use).

Ball in hand

Game-ending fouls (instant loss of the rack):

• Pocketing the 8-ball on the same shot as your last group ball.
• Jumping the 8-ball off the table at any point.
• Pocketing the 8-ball in a pocket other than the one called.
• Potting the 8-ball before clearing the rest of your group.

A handy one to remember: three consecutive standard fouls in the same game = automatic loss, provided your opponent warns you after the second.

Heyball Fouls

Heyball is the newest of the three — a WPA-backed hybrid played on a larger table with 15 numbered balls, governed by the International Heyball Pool Association (IHPA). Groups are split 1–7 and 9–15, and like 8-ball, you clear your group before potting the 8-ball to win.

Because Heyball's rulebook was built directly on the WPA's 8-ball and 9-ball framework, the standard foul list will look familiar: wrong ball first, scratches, no rail after contact, touched balls, double hits, balls still moving, and so on all carry the same cue-ball-in-hand penalty.

A couple of fouls are more specific to Heyball:

• Head string placement — when you have ball in hand behind the head string, the first ball you contact must also be beyond the head string, unless your cue ball crosses the line first.
• Shot clock violations — Heyball is typically played with a running shot clock (commonly 30 seconds, plus a limited number of extensions per rack); failing to shoot in time is a foul.

Rules and Sources Matrix