24-second violation
The shot clock has run out -- check out all of the official referee hand signals!
Official Rules of the National Basketball Association
Check out the Official Rules of the NBA and be on your way to understanding the game from a referee's perspective.
  • NBA Approves Rules Changes
  • Stu Jackson rules changes Q&A


    • NBA Primer
    The NBA Primer gives the basketball beginner a place to start learning the game.
  • An NBA team lineup
  • Fundamentals and viewing tips
  • Glossary of NBA terms
  • History of the shot clock
  • How to read a box score
  • NBA divisions and conferences
  • NBA expansion teams
  • NBA Playoffs
  • Referee hand signals
  • Roster regulations
  • Rules: NBA and FIBA


    • Hardwood to Hardbacks
    Want to find out more about the NBA, and its players and coaches? Here's a list of further reading for NBA fans.
  • Reference
  • Instructional
  • Biography/autobiography
  • History
  • Team books
  • General