Rules

Rules for billiard leagues and organizations.

World Pool-Billiard Association (WPA)

The worldwide governing body for pool (pocket billiards): sets/oversees international rules, regulations, and sanctioning through its member federations/continental bodies.

American Poolplayers Association (APA)

A large amateur league system best known for its proprietary handicapping approach (“The Equalizer®”) to let mixed-skill players compete.